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-rw-r--r--drivers/clk/Makefile3
-rw-r--r--drivers/clk/ingenic/Makefile3
-rw-r--r--drivers/clk/ingenic/cgu.c711
-rw-r--r--drivers/clk/ingenic/cgu.h223
-rw-r--r--drivers/clk/ingenic/jz4740-cgu.c303
-rw-r--r--drivers/clk/ingenic/jz4780-cgu.c733
6 files changed, 1975 insertions, 1 deletions
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 5b6af6a9319f..8732e4c5bf3c 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -24,7 +24,7 @@ obj-$(CONFIG_COMMON_CLK_CDCE706) += clk-cdce706.o
obj-$(CONFIG_ARCH_CLPS711X) += clk-clps711x.o
obj-$(CONFIG_ARCH_EFM32) += clk-efm32gg.o
obj-$(CONFIG_ARCH_HIGHBANK) += clk-highbank.o
-obj-$(CONFIG_MACH_LOONGSON1) += clk-ls1x.o
+obj-$(CONFIG_MACH_LOONGSON32) += clk-ls1x.o
obj-$(CONFIG_COMMON_CLK_MAX_GEN) += clk-max-gen.o
obj-$(CONFIG_COMMON_CLK_MAX77686) += clk-max77686.o
obj-$(CONFIG_COMMON_CLK_MAX77802) += clk-max77802.o
@@ -51,6 +51,7 @@ obj-$(CONFIG_ARCH_HI3xxx) += hisilicon/
obj-$(CONFIG_ARCH_HIP04) += hisilicon/
obj-$(CONFIG_ARCH_HIX5HD2) += hisilicon/
obj-$(CONFIG_ARCH_MXC) += imx/
+obj-$(CONFIG_MACH_INGENIC) += ingenic/
obj-$(CONFIG_COMMON_CLK_KEYSTONE) += keystone/
ifeq ($(CONFIG_COMMON_CLK), y)
obj-$(CONFIG_ARCH_MMP) += mmp/
diff --git a/drivers/clk/ingenic/Makefile b/drivers/clk/ingenic/Makefile
new file mode 100644
index 000000000000..cd47b0664c2b
--- /dev/null
+++ b/drivers/clk/ingenic/Makefile
@@ -0,0 +1,3 @@
+obj-y += cgu.o
+obj-$(CONFIG_MACH_JZ4740) += jz4740-cgu.o
+obj-$(CONFIG_MACH_JZ4780) += jz4780-cgu.o
diff --git a/drivers/clk/ingenic/cgu.c b/drivers/clk/ingenic/cgu.c
new file mode 100644
index 000000000000..b936cdd1a13c
--- /dev/null
+++ b/drivers/clk/ingenic/cgu.c
@@ -0,0 +1,711 @@
+/*
+ * Ingenic SoC CGU driver
+ *
+ * Copyright (c) 2013-2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
+#include <linux/math64.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include "cgu.h"
+
+#define MHZ (1000 * 1000)
+
+/**
+ * ingenic_cgu_gate_get() - get the value of clock gate register bit
+ * @cgu: reference to the CGU whose registers should be read
+ * @info: info struct describing the gate bit
+ *
+ * Retrieves the state of the clock gate bit described by info. The
+ * caller must hold cgu->lock.
+ *
+ * Return: true if the gate bit is set, else false.
+ */
+static inline bool
+ingenic_cgu_gate_get(struct ingenic_cgu *cgu,
+ const struct ingenic_cgu_gate_info *info)
+{
+ return readl(cgu->base + info->reg) & BIT(info->bit);
+}
+
+/**
+ * ingenic_cgu_gate_set() - set the value of clock gate register bit
+ * @cgu: reference to the CGU whose registers should be modified
+ * @info: info struct describing the gate bit
+ * @val: non-zero to gate a clock, otherwise zero
+ *
+ * Sets the given gate bit in order to gate or ungate a clock.
+ *
+ * The caller must hold cgu->lock.
+ */
+static inline void
+ingenic_cgu_gate_set(struct ingenic_cgu *cgu,
+ const struct ingenic_cgu_gate_info *info, bool val)
+{
+ u32 clkgr = readl(cgu->base + info->reg);
+
+ if (val)
+ clkgr |= BIT(info->bit);
+ else
+ clkgr &= ~BIT(info->bit);
+
+ writel(clkgr, cgu->base + info->reg);
+}
+
+/*
+ * PLL operations
+ */
+
+static unsigned long
+ingenic_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ const struct ingenic_cgu_pll_info *pll_info;
+ unsigned m, n, od_enc, od;
+ bool bypass, enable;
+ unsigned long flags;
+ u32 ctl;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+ BUG_ON(clk_info->type != CGU_CLK_PLL);
+ pll_info = &clk_info->pll;
+
+ spin_lock_irqsave(&cgu->lock, flags);
+ ctl = readl(cgu->base + pll_info->reg);
+ spin_unlock_irqrestore(&cgu->lock, flags);
+
+ m = (ctl >> pll_info->m_shift) & GENMASK(pll_info->m_bits - 1, 0);
+ m += pll_info->m_offset;
+ n = (ctl >> pll_info->n_shift) & GENMASK(pll_info->n_bits - 1, 0);
+ n += pll_info->n_offset;
+ od_enc = ctl >> pll_info->od_shift;
+ od_enc &= GENMASK(pll_info->od_bits - 1, 0);
+ bypass = !!(ctl & BIT(pll_info->bypass_bit));
+ enable = !!(ctl & BIT(pll_info->enable_bit));
+
+ if (bypass)
+ return parent_rate;
+
+ if (!enable)
+ return 0;
+
+ for (od = 0; od < pll_info->od_max; od++) {
+ if (pll_info->od_encoding[od] == od_enc)
+ break;
+ }
+ BUG_ON(od == pll_info->od_max);
+ od++;
+
+ return div_u64((u64)parent_rate * m, n * od);
+}
+
+static unsigned long
+ingenic_pll_calc(const struct ingenic_cgu_clk_info *clk_info,
+ unsigned long rate, unsigned long parent_rate,
+ unsigned *pm, unsigned *pn, unsigned *pod)
+{
+ const struct ingenic_cgu_pll_info *pll_info;
+ unsigned m, n, od;
+
+ pll_info = &clk_info->pll;
+ od = 1;
+
+ /*
+ * The frequency after the input divider must be between 10 and 50 MHz.
+ * The highest divider yields the best resolution.
+ */
+ n = parent_rate / (10 * MHZ);
+ n = min_t(unsigned, n, 1 << clk_info->pll.n_bits);
+ n = max_t(unsigned, n, pll_info->n_offset);
+
+ m = (rate / MHZ) * od * n / (parent_rate / MHZ);
+ m = min_t(unsigned, m, 1 << clk_info->pll.m_bits);
+ m = max_t(unsigned, m, pll_info->m_offset);
+
+ if (pm)
+ *pm = m;
+ if (pn)
+ *pn = n;
+ if (pod)
+ *pod = od;
+
+ return div_u64((u64)parent_rate * m, n * od);
+}
+
+static long
+ingenic_pll_round_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long *prate)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+ BUG_ON(clk_info->type != CGU_CLK_PLL);
+
+ return ingenic_pll_calc(clk_info, req_rate, *prate, NULL, NULL, NULL);
+}
+
+static int
+ingenic_pll_set_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long parent_rate)
+{
+ const unsigned timeout = 100;
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ const struct ingenic_cgu_pll_info *pll_info;
+ unsigned long rate, flags;
+ unsigned m, n, od, i;
+ u32 ctl;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+ BUG_ON(clk_info->type != CGU_CLK_PLL);
+ pll_info = &clk_info->pll;
+
+ rate = ingenic_pll_calc(clk_info, req_rate, parent_rate,
+ &m, &n, &od);
+ if (rate != req_rate)
+ pr_info("ingenic-cgu: request '%s' rate %luHz, actual %luHz\n",
+ clk_info->name, req_rate, rate);
+
+ spin_lock_irqsave(&cgu->lock, flags);
+ ctl = readl(cgu->base + pll_info->reg);
+
+ ctl &= ~(GENMASK(pll_info->m_bits - 1, 0) << pll_info->m_shift);
+ ctl |= (m - pll_info->m_offset) << pll_info->m_shift;
+
+ ctl &= ~(GENMASK(pll_info->n_bits - 1, 0) << pll_info->n_shift);
+ ctl |= (n - pll_info->n_offset) << pll_info->n_shift;
+
+ ctl &= ~(GENMASK(pll_info->od_bits - 1, 0) << pll_info->od_shift);
+ ctl |= pll_info->od_encoding[od - 1] << pll_info->od_shift;
+
+ ctl &= ~BIT(pll_info->bypass_bit);
+ ctl |= BIT(pll_info->enable_bit);
+
+ writel(ctl, cgu->base + pll_info->reg);
+
+ /* wait for the PLL to stabilise */
+ for (i = 0; i < timeout; i++) {
+ ctl = readl(cgu->base + pll_info->reg);
+ if (ctl & BIT(pll_info->stable_bit))
+ break;
+ mdelay(1);
+ }
+
+ spin_unlock_irqrestore(&cgu->lock, flags);
+
+ if (i == timeout)
+ return -EBUSY;
+
+ return 0;
+}
+
+static const struct clk_ops ingenic_pll_ops = {
+ .recalc_rate = ingenic_pll_recalc_rate,
+ .round_rate = ingenic_pll_round_rate,
+ .set_rate = ingenic_pll_set_rate,
+};
+
+/*
+ * Operations for all non-PLL clocks
+ */
+
+static u8 ingenic_clk_get_parent(struct clk_hw *hw)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ u32 reg;
+ u8 i, hw_idx, idx = 0;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_MUX) {
+ reg = readl(cgu->base + clk_info->mux.reg);
+ hw_idx = (reg >> clk_info->mux.shift) &
+ GENMASK(clk_info->mux.bits - 1, 0);
+
+ /*
+ * Convert the hardware index to the parent index by skipping
+ * over any -1's in the parents array.
+ */
+ for (i = 0; i < hw_idx; i++) {
+ if (clk_info->parents[i] != -1)
+ idx++;
+ }
+ }
+
+ return idx;
+}
+
+static int ingenic_clk_set_parent(struct clk_hw *hw, u8 idx)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ unsigned long flags;
+ u8 curr_idx, hw_idx, num_poss;
+ u32 reg, mask;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_MUX) {
+ /*
+ * Convert the parent index to the hardware index by adding
+ * 1 for any -1 in the parents array preceding the given
+ * index. That is, we want the index of idx'th entry in
+ * clk_info->parents which does not equal -1.
+ */
+ hw_idx = curr_idx = 0;
+ num_poss = 1 << clk_info->mux.bits;
+ for (; hw_idx < num_poss; hw_idx++) {
+ if (clk_info->parents[hw_idx] == -1)
+ continue;
+ if (curr_idx == idx)
+ break;
+ curr_idx++;
+ }
+
+ /* idx should always be a valid parent */
+ BUG_ON(curr_idx != idx);
+
+ mask = GENMASK(clk_info->mux.bits - 1, 0);
+ mask <<= clk_info->mux.shift;
+
+ spin_lock_irqsave(&cgu->lock, flags);
+
+ /* write the register */
+ reg = readl(cgu->base + clk_info->mux.reg);
+ reg &= ~mask;
+ reg |= hw_idx << clk_info->mux.shift;
+ writel(reg, cgu->base + clk_info->mux.reg);
+
+ spin_unlock_irqrestore(&cgu->lock, flags);
+ return 0;
+ }
+
+ return idx ? -EINVAL : 0;
+}
+
+static unsigned long
+ingenic_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ unsigned long rate = parent_rate;
+ u32 div_reg, div;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_DIV) {
+ div_reg = readl(cgu->base + clk_info->div.reg);
+ div = (div_reg >> clk_info->div.shift) &
+ GENMASK(clk_info->div.bits - 1, 0);
+ div += 1;
+
+ rate /= div;
+ }
+
+ return rate;
+}
+
+static unsigned
+ingenic_clk_calc_div(const struct ingenic_cgu_clk_info *clk_info,
+ unsigned long parent_rate, unsigned long req_rate)
+{
+ unsigned div;
+
+ /* calculate the divide */
+ div = DIV_ROUND_UP(parent_rate, req_rate);
+
+ /* and impose hardware constraints */
+ div = min_t(unsigned, div, 1 << clk_info->div.bits);
+ div = max_t(unsigned, div, 1);
+
+ return div;
+}
+
+static long
+ingenic_clk_round_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long *parent_rate)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ long rate = *parent_rate;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_DIV)
+ rate /= ingenic_clk_calc_div(clk_info, *parent_rate, req_rate);
+ else if (clk_info->type & CGU_CLK_FIXDIV)
+ rate /= clk_info->fixdiv.div;
+
+ return rate;
+}
+
+static int
+ingenic_clk_set_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long parent_rate)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ const unsigned timeout = 100;
+ unsigned long rate, flags;
+ unsigned div, i;
+ u32 reg, mask;
+ int ret = 0;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_DIV) {
+ div = ingenic_clk_calc_div(clk_info, parent_rate, req_rate);
+ rate = parent_rate / div;
+
+ if (rate != req_rate)
+ return -EINVAL;
+
+ spin_lock_irqsave(&cgu->lock, flags);
+ reg = readl(cgu->base + clk_info->div.reg);
+
+ /* update the divide */
+ mask = GENMASK(clk_info->div.bits - 1, 0);
+ reg &= ~(mask << clk_info->div.shift);
+ reg |= (div - 1) << clk_info->div.shift;
+
+ /* clear the stop bit */
+ if (clk_info->div.stop_bit != -1)
+ reg &= ~BIT(clk_info->div.stop_bit);
+
+ /* set the change enable bit */
+ if (clk_info->div.ce_bit != -1)
+ reg |= BIT(clk_info->div.ce_bit);
+
+ /* update the hardware */
+ writel(reg, cgu->base + clk_info->div.reg);
+
+ /* wait for the change to take effect */
+ if (clk_info->div.busy_bit != -1) {
+ for (i = 0; i < timeout; i++) {
+ reg = readl(cgu->base + clk_info->div.reg);
+ if (!(reg & BIT(clk_info->div.busy_bit)))
+ break;
+ mdelay(1);
+ }
+ if (i == timeout)
+ ret = -EBUSY;
+ }
+
+ spin_unlock_irqrestore(&cgu->lock, flags);
+ return ret;
+ }
+
+ return -EINVAL;
+}
+
+static int ingenic_clk_enable(struct clk_hw *hw)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ unsigned long flags;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_GATE) {
+ /* ungate the clock */
+ spin_lock_irqsave(&cgu->lock, flags);
+ ingenic_cgu_gate_set(cgu, &clk_info->gate, false);
+ spin_unlock_irqrestore(&cgu->lock, flags);
+ }
+
+ return 0;
+}
+
+static void ingenic_clk_disable(struct clk_hw *hw)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ unsigned long flags;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_GATE) {
+ /* gate the clock */
+ spin_lock_irqsave(&cgu->lock, flags);
+ ingenic_cgu_gate_set(cgu, &clk_info->gate, true);
+ spin_unlock_irqrestore(&cgu->lock, flags);
+ }
+}
+
+static int ingenic_clk_is_enabled(struct clk_hw *hw)
+{
+ struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+ struct ingenic_cgu *cgu = ingenic_clk->cgu;
+ const struct ingenic_cgu_clk_info *clk_info;
+ unsigned long flags;
+ int enabled = 1;
+
+ clk_info = &cgu->clock_info[ingenic_clk->idx];
+
+ if (clk_info->type & CGU_CLK_GATE) {
+ spin_lock_irqsave(&cgu->lock, flags);
+ enabled = !ingenic_cgu_gate_get(cgu, &clk_info->gate);
+ spin_unlock_irqrestore(&cgu->lock, flags);
+ }
+
+ return enabled;
+}
+
+static const struct clk_ops ingenic_clk_ops = {
+ .get_parent = ingenic_clk_get_parent,
+ .set_parent = ingenic_clk_set_parent,
+
+ .recalc_rate = ingenic_clk_recalc_rate,
+ .round_rate = ingenic_clk_round_rate,
+ .set_rate = ingenic_clk_set_rate,
+
+ .enable = ingenic_clk_enable,
+ .disable = ingenic_clk_disable,
+ .is_enabled = ingenic_clk_is_enabled,
+};
+
+/*
+ * Setup functions.
+ */
+
+static int ingenic_register_clock(struct ingenic_cgu *cgu, unsigned idx)
+{
+ const struct ingenic_cgu_clk_info *clk_info = &cgu->clock_info[idx];
+ struct clk_init_data clk_init;
+ struct ingenic_clk *ingenic_clk = NULL;
+ struct clk *clk, *parent;
+ const char *parent_names[4];
+ unsigned caps, i, num_possible;
+ int err = -EINVAL;
+
+ BUILD_BUG_ON(ARRAY_SIZE(clk_info->parents) > ARRAY_SIZE(parent_names));
+
+ if (clk_info->type == CGU_CLK_EXT) {
+ clk = of_clk_get_by_name(cgu->np, clk_info->name);
+ if (IS_ERR(clk)) {
+ pr_err("%s: no external clock '%s' provided\n",
+ __func__, clk_info->name);
+ err = -ENODEV;
+ goto out;
+ }
+ err = clk_register_clkdev(clk, clk_info->name, NULL);
+ if (err) {
+ clk_put(clk);
+ goto out;
+ }
+ cgu->clocks.clks[idx] = clk;
+ return 0;
+ }
+
+ if (!clk_info->type) {
+ pr_err("%s: no clock type specified for '%s'\n", __func__,
+ clk_info->name);
+ goto out;
+ }
+
+ ingenic_clk = kzalloc(sizeof(*ingenic_clk), GFP_KERNEL);
+ if (!ingenic_clk) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ ingenic_clk->hw.init = &clk_init;
+ ingenic_clk->cgu = cgu;
+ ingenic_clk->idx = idx;
+
+ clk_init.name = clk_info->name;
+ clk_init.flags = 0;
+ clk_init.parent_names = parent_names;
+
+ caps = clk_info->type;
+
+ if (caps & (CGU_CLK_MUX | CGU_CLK_CUSTOM)) {
+ clk_init.num_parents = 0;
+
+ if (caps & CGU_CLK_MUX)
+ num_possible = 1 << clk_info->mux.bits;
+ else
+ num_possible = ARRAY_SIZE(clk_info->parents);
+
+ for (i = 0; i < num_possible; i++) {
+ if (clk_info->parents[i] == -1)
+ continue;
+
+ parent = cgu->clocks.clks[clk_info->parents[i]];
+ parent_names[clk_init.num_parents] =
+ __clk_get_name(parent);
+ clk_init.num_parents++;
+ }
+
+ BUG_ON(!clk_init.num_parents);
+ BUG_ON(clk_init.num_parents > ARRAY_SIZE(parent_names));
+ } else {
+ BUG_ON(clk_info->parents[0] == -1);
+ clk_init.num_parents = 1;
+ parent = cgu->clocks.clks[clk_info->parents[0]];
+ parent_names[0] = __clk_get_name(parent);
+ }
+
+ if (caps & CGU_CLK_CUSTOM) {
+ clk_init.ops = clk_info->custom.clk_ops;
+
+ caps &= ~CGU_CLK_CUSTOM;
+
+ if (caps) {
+ pr_err("%s: custom clock may not be combined with type 0x%x\n",
+ __func__, caps);
+ goto out;
+ }
+ } else if (caps & CGU_CLK_PLL) {
+ clk_init.ops = &ingenic_pll_ops;
+
+ caps &= ~CGU_CLK_PLL;
+
+ if (caps) {
+ pr_err("%s: PLL may not be combined with type 0x%x\n",
+ __func__, caps);
+ goto out;
+ }
+ } else {
+ clk_init.ops = &ingenic_clk_ops;
+ }
+
+ /* nothing to do for gates or fixed dividers */
+ caps &= ~(CGU_CLK_GATE | CGU_CLK_FIXDIV);
+
+ if (caps & CGU_CLK_MUX) {
+ if (!(caps & CGU_CLK_MUX_GLITCHFREE))
+ clk_init.flags |= CLK_SET_PARENT_GATE;
+
+ caps &= ~(CGU_CLK_MUX | CGU_CLK_MUX_GLITCHFREE);
+ }
+
+ if (caps & CGU_CLK_DIV) {
+ caps &= ~CGU_CLK_DIV;
+ } else {
+ /* pass rate changes to the parent clock */
+ clk_init.flags |= CLK_SET_RATE_PARENT;
+ }
+
+ if (caps) {
+ pr_err("%s: unknown clock type 0x%x\n", __func__, caps);
+ goto out;
+ }
+
+ clk = clk_register(NULL, &ingenic_clk->hw);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to register clock '%s'\n", __func__,
+ clk_info->name);
+ err = PTR_ERR(clk);
+ goto out;
+ }
+
+ err = clk_register_clkdev(clk, clk_info->name, NULL);
+ if (err)
+ goto out;
+
+ cgu->clocks.clks[idx] = clk;
+out:
+ if (err)
+ kfree(ingenic_clk);
+ return err;
+}
+
+struct ingenic_cgu *
+ingenic_cgu_new(const struct ingenic_cgu_clk_info *clock_info,
+ unsigned num_clocks, struct device_node *np)
+{
+ struct ingenic_cgu *cgu;
+
+ cgu = kzalloc(sizeof(*cgu), GFP_KERNEL);
+ if (!cgu)
+ goto err_out;
+
+ cgu->base = of_iomap(np, 0);
+ if (!cgu->base) {
+ pr_err("%s: failed to map CGU registers\n", __func__);
+ goto err_out_free;
+ }
+
+ cgu->np = np;
+ cgu->clock_info = clock_info;
+ cgu->clocks.clk_num = num_clocks;
+
+ spin_lock_init(&cgu->lock);
+
+ return cgu;
+
+err_out_free:
+ kfree(cgu);
+err_out:
+ return NULL;
+}
+
+int ingenic_cgu_register_clocks(struct ingenic_cgu *cgu)
+{
+ unsigned i;
+ int err;
+
+ cgu->clocks.clks = kcalloc(cgu->clocks.clk_num, sizeof(struct clk *),
+ GFP_KERNEL);
+ if (!cgu->clocks.clks) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ for (i = 0; i < cgu->clocks.clk_num; i++) {
+ err = ingenic_register_clock(cgu, i);
+ if (err)
+ goto err_out_unregister;
+ }
+
+ err = of_clk_add_provider(cgu->np, of_clk_src_onecell_get,
+ &cgu->clocks);
+ if (err)
+ goto err_out_unregister;
+
+ return 0;
+
+err_out_unregister:
+ for (i = 0; i < cgu->clocks.clk_num; i++) {
+ if (!cgu->clocks.clks[i])
+ continue;
+ if (cgu->clock_info[i].type & CGU_CLK_EXT)
+ clk_put(cgu->clocks.clks[i]);
+ else
+ clk_unregister(cgu->clocks.clks[i]);
+ }
+ kfree(cgu->clocks.clks);
+err_out:
+ return err;
+}
diff --git a/drivers/clk/ingenic/cgu.h b/drivers/clk/ingenic/cgu.h
new file mode 100644
index 000000000000..99347e2b97e8
--- /dev/null
+++ b/drivers/clk/ingenic/cgu.h
@@ -0,0 +1,223 @@
+/*
+ * Ingenic SoC CGU driver
+ *
+ * Copyright (c) 2013-2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __DRIVERS_CLK_INGENIC_CGU_H__
+#define __DRIVERS_CLK_INGENIC_CGU_H__
+
+#include <linux/bitops.h>
+#include <linux/of.h>
+#include <linux/spinlock.h>
+
+/**
+ * struct ingenic_cgu_pll_info - information about a PLL
+ * @reg: the offset of the PLL's control register within the CGU
+ * @m_shift: the number of bits to shift the multiplier value by (ie. the
+ * index of the lowest bit of the multiplier value in the PLL's
+ * control register)
+ * @m_bits: the size of the multiplier field in bits
+ * @m_offset: the multiplier value which encodes to 0 in the PLL's control
+ * register
+ * @n_shift: the number of bits to shift the divider value by (ie. the
+ * index of the lowest bit of the divider value in the PLL's
+ * control register)
+ * @n_bits: the size of the divider field in bits
+ * @n_offset: the divider value which encodes to 0 in the PLL's control
+ * register
+ * @od_shift: the number of bits to shift the post-VCO divider value by (ie.
+ * the index of the lowest bit of the post-VCO divider value in
+ * the PLL's control register)
+ * @od_bits: the size of the post-VCO divider field in bits
+ * @od_max: the maximum post-VCO divider value
+ * @od_encoding: a pointer to an array mapping post-VCO divider values to
+ * their encoded values in the PLL control register, or -1 for
+ * unsupported values
+ * @bypass_bit: the index of the bypass bit in the PLL control register
+ * @enable_bit: the index of the enable bit in the PLL control register
+ * @stable_bit: the index of the stable bit in the PLL control register
+ */
+struct ingenic_cgu_pll_info {
+ unsigned reg;
+ const s8 *od_encoding;
+ u8 m_shift, m_bits, m_offset;
+ u8 n_shift, n_bits, n_offset;
+ u8 od_shift, od_bits, od_max;
+ u8 bypass_bit;
+ u8 enable_bit;
+ u8 stable_bit;
+};
+
+/**
+ * struct ingenic_cgu_mux_info - information about a clock mux
+ * @reg: offset of the mux control register within the CGU
+ * @shift: number of bits to shift the mux value by (ie. the index of
+ * the lowest bit of the mux value within its control register)
+ * @bits: the size of the mux value in bits
+ */
+struct ingenic_cgu_mux_info {
+ unsigned reg;
+ u8 shift;
+ u8 bits;
+};
+
+/**
+ * struct ingenic_cgu_div_info - information about a divider
+ * @reg: offset of the divider control register within the CGU
+ * @shift: number of bits to shift the divide value by (ie. the index of
+ * the lowest bit of the divide value within its control register)
+ * @bits: the size of the divide value in bits
+ * @ce_bit: the index of the change enable bit within reg, or -1 if there
+ * isn't one
+ * @busy_bit: the index of the busy bit within reg, or -1 if there isn't one
+ * @stop_bit: the index of the stop bit within reg, or -1 if there isn't one
+ */
+struct ingenic_cgu_div_info {
+ unsigned reg;
+ u8 shift;
+ u8 bits;
+ s8 ce_bit;
+ s8 busy_bit;
+ s8 stop_bit;
+};
+
+/**
+ * struct ingenic_cgu_fixdiv_info - information about a fixed divider
+ * @div: the divider applied to the parent clock
+ */
+struct ingenic_cgu_fixdiv_info {
+ unsigned div;
+};
+
+/**
+ * struct ingenic_cgu_gate_info - information about a clock gate
+ * @reg: offset of the gate control register within the CGU
+ * @bit: offset of the bit in the register that controls the gate
+ */
+struct ingenic_cgu_gate_info {
+ unsigned reg;
+ u8 bit;
+};
+
+/**
+ * struct ingenic_cgu_custom_info - information about a custom (SoC) clock
+ * @clk_ops: custom clock operation callbacks
+ */
+struct ingenic_cgu_custom_info {
+ struct clk_ops *clk_ops;
+};
+
+/**
+ * struct ingenic_cgu_clk_info - information about a clock
+ * @name: name of the clock
+ * @type: a bitmask formed from CGU_CLK_* values
+ * @parents: an array of the indices of potential parents of this clock
+ * within the clock_info array of the CGU, or -1 in entries
+ * which correspond to no valid parent
+ * @pll: information valid if type includes CGU_CLK_PLL
+ * @gate: information valid if type includes CGU_CLK_GATE
+ * @mux: information valid if type includes CGU_CLK_MUX
+ * @div: information valid if type includes CGU_CLK_DIV
+ * @fixdiv: information valid if type includes CGU_CLK_FIXDIV
+ * @custom: information valid if type includes CGU_CLK_CUSTOM
+ */
+struct ingenic_cgu_clk_info {
+ const char *name;
+
+ enum {
+ CGU_CLK_NONE = 0,
+ CGU_CLK_EXT = BIT(0),
+ CGU_CLK_PLL = BIT(1),
+ CGU_CLK_GATE = BIT(2),
+ CGU_CLK_MUX = BIT(3),
+ CGU_CLK_MUX_GLITCHFREE = BIT(4),
+ CGU_CLK_DIV = BIT(5),
+ CGU_CLK_FIXDIV = BIT(6),
+ CGU_CLK_CUSTOM = BIT(7),
+ } type;
+
+ int parents[4];
+
+ union {
+ struct ingenic_cgu_pll_info pll;
+
+ struct {
+ struct ingenic_cgu_gate_info gate;
+ struct ingenic_cgu_mux_info mux;
+ struct ingenic_cgu_div_info div;
+ struct ingenic_cgu_fixdiv_info fixdiv;
+ };
+
+ struct ingenic_cgu_custom_info custom;
+ };
+};
+
+/**
+ * struct ingenic_cgu - data about the CGU
+ * @np: the device tree node that caused the CGU to be probed
+ * @base: the ioremap'ed base address of the CGU registers
+ * @clock_info: an array containing information about implemented clocks
+ * @clocks: used to provide clocks to DT, allows lookup of struct clk*
+ * @lock: lock to be held whilst manipulating CGU registers
+ */
+struct ingenic_cgu {
+ struct device_node *np;
+ void __iomem *base;
+
+ const struct ingenic_cgu_clk_info *clock_info;
+ struct clk_onecell_data clocks;
+
+ spinlock_t lock;
+};
+
+/**
+ * struct ingenic_clk - private data for a clock
+ * @hw: see Documentation/clk.txt
+ * @cgu: a pointer to the CGU data
+ * @idx: the index of this clock in cgu->clock_info
+ */
+struct ingenic_clk {
+ struct clk_hw hw;
+ struct ingenic_cgu *cgu;
+ unsigned idx;
+};
+
+#define to_ingenic_clk(_hw) container_of(_hw, struct ingenic_clk, hw)
+
+/**
+ * ingenic_cgu_new() - create a new CGU instance
+ * @clock_info: an array of clock information structures describing the clocks
+ * which are implemented by the CGU
+ * @num_clocks: the number of entries in clock_info
+ * @np: the device tree node which causes this CGU to be probed
+ *
+ * Return: a pointer to the CGU instance if initialisation is successful,
+ * otherwise NULL.
+ */
+struct ingenic_cgu *
+ingenic_cgu_new(const struct ingenic_cgu_clk_info *clock_info,
+ unsigned num_clocks, struct device_node *np);
+
+/**
+ * ingenic_cgu_register_clocks() - Registers the clocks
+ * @cgu: pointer to cgu data
+ *
+ * Register the clocks described by the CGU with the common clock framework.
+ *
+ * Return: 0 on success or -errno if unsuccesful.
+ */
+int ingenic_cgu_register_clocks(struct ingenic_cgu *cgu);
+
+#endif /* __DRIVERS_CLK_INGENIC_CGU_H__ */
diff --git a/drivers/clk/ingenic/jz4740-cgu.c b/drivers/clk/ingenic/jz4740-cgu.c
new file mode 100644
index 000000000000..305a26c2a800
--- /dev/null
+++ b/drivers/clk/ingenic/jz4740-cgu.c
@@ -0,0 +1,303 @@
+/*
+ * Ingenic JZ4740 SoC CGU driver
+ *
+ * Copyright (c) 2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <dt-bindings/clock/jz4740-cgu.h>
+#include <asm/mach-jz4740/clock.h>
+#include "cgu.h"
+
+/* CGU register offsets */
+#define CGU_REG_CPCCR 0x00
+#define CGU_REG_LCR 0x04
+#define CGU_REG_CPPCR 0x10
+#define CGU_REG_CLKGR 0x20
+#define CGU_REG_SCR 0x24
+#define CGU_REG_I2SCDR 0x60
+#define CGU_REG_LPCDR 0x64
+#define CGU_REG_MSCCDR 0x68
+#define CGU_REG_UHCCDR 0x6c
+#define CGU_REG_SSICDR 0x74
+
+/* bits within a PLL control register */
+#define PLLCTL_M_SHIFT 23
+#define PLLCTL_M_MASK (0x1ff << PLLCTL_M_SHIFT)
+#define PLLCTL_N_SHIFT 18
+#define PLLCTL_N_MASK (0x1f << PLLCTL_N_SHIFT)
+#define PLLCTL_OD_SHIFT 16
+#define PLLCTL_OD_MASK (0x3 << PLLCTL_OD_SHIFT)
+#define PLLCTL_STABLE (1 << 10)
+#define PLLCTL_BYPASS (1 << 9)
+#define PLLCTL_ENABLE (1 << 8)
+
+/* bits within the LCR register */
+#define LCR_SLEEP (1 << 0)
+
+/* bits within the CLKGR register */
+#define CLKGR_UDC (1 << 11)
+
+static struct ingenic_cgu *cgu;
+
+static const s8 pll_od_encoding[4] = {
+ 0x0, 0x1, -1, 0x3,
+};
+
+static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = {
+
+ /* External clocks */
+
+ [JZ4740_CLK_EXT] = { "ext", CGU_CLK_EXT },
+ [JZ4740_CLK_RTC] = { "rtc", CGU_CLK_EXT },
+
+ [JZ4740_CLK_PLL] = {
+ "pll", CGU_CLK_PLL,
+ .parents = { JZ4740_CLK_EXT, -1, -1, -1 },
+ .pll = {
+ .reg = CGU_REG_CPPCR,
+ .m_shift = 23,
+ .m_bits = 9,
+ .m_offset = 2,
+ .n_shift = 18,
+ .n_bits = 5,
+ .n_offset = 2,
+ .od_shift = 16,
+ .od_bits = 2,
+ .od_max = 4,
+ .od_encoding = pll_od_encoding,
+ .stable_bit = 10,
+ .bypass_bit = 9,
+ .enable_bit = 8,
+ },
+ },
+
+ /* Muxes & dividers */
+
+ [JZ4740_CLK_PLL_HALF] = {
+ "pll half", CGU_CLK_DIV,
+ .parents = { JZ4740_CLK_PLL, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 21, 1, -1, -1, -1 },
+ },
+
+ [JZ4740_CLK_CCLK] = {
+ "cclk", CGU_CLK_DIV,
+ .parents = { JZ4740_CLK_PLL, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 0, 4, 22, -1, -1 },
+ },
+
+ [JZ4740_CLK_HCLK] = {
+ "hclk", CGU_CLK_DIV,
+ .parents = { JZ4740_CLK_PLL, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 4, 4, 22, -1, -1 },
+ },
+
+ [JZ4740_CLK_PCLK] = {
+ "pclk", CGU_CLK_DIV,
+ .parents = { JZ4740_CLK_PLL, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 8, 4, 22, -1, -1 },
+ },
+
+ [JZ4740_CLK_MCLK] = {
+ "mclk", CGU_CLK_DIV,
+ .parents = { JZ4740_CLK_PLL, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 12, 4, 22, -1, -1 },
+ },
+
+ [JZ4740_CLK_LCD] = {
+ "lcd", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
+ .div = { CGU_REG_CPCCR, 16, 5, 22, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 10 },
+ },
+
+ [JZ4740_CLK_LCD_PCLK] = {
+ "lcd_pclk", CGU_CLK_DIV,
+ .parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
+ .div = { CGU_REG_LPCDR, 0, 11, -1, -1, -1 },
+ },
+
+ [JZ4740_CLK_I2S] = {
+ "i2s", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL_HALF, -1, -1 },
+ .mux = { CGU_REG_CPCCR, 31, 1 },
+ .div = { CGU_REG_I2SCDR, 0, 8, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 6 },
+ },
+
+ [JZ4740_CLK_SPI] = {
+ "spi", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL, -1, -1 },
+ .mux = { CGU_REG_SSICDR, 31, 1 },
+ .div = { CGU_REG_SSICDR, 0, 4, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 4 },
+ },
+
+ [JZ4740_CLK_MMC] = {
+ "mmc", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
+ .div = { CGU_REG_MSCCDR, 0, 5, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 7 },
+ },
+
+ [JZ4740_CLK_UHC] = {
+ "uhc", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_PLL_HALF, -1, -1, -1 },
+ .div = { CGU_REG_UHCCDR, 0, 4, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 14 },
+ },
+
+ [JZ4740_CLK_UDC] = {
+ "udc", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4740_CLK_EXT, JZ4740_CLK_PLL_HALF, -1, -1 },
+ .mux = { CGU_REG_CPCCR, 29, 1 },
+ .div = { CGU_REG_CPCCR, 23, 6, -1, -1, -1 },
+ .gate = { CGU_REG_SCR, 6 },
+ },
+
+ /* Gate-only clocks */
+
+ [JZ4740_CLK_UART0] = {
+ "uart0", CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_EXT, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 0 },
+ },
+
+ [JZ4740_CLK_UART1] = {
+ "uart1", CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_EXT, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 15 },
+ },
+
+ [JZ4740_CLK_DMA] = {
+ "dma", CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_PCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 12 },
+ },
+
+ [JZ4740_CLK_IPU] = {
+ "ipu", CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_PCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 13 },
+ },
+
+ [JZ4740_CLK_ADC] = {
+ "adc", CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_EXT, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 8 },
+ },
+
+ [JZ4740_CLK_I2C] = {
+ "i2c", CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_EXT, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 3 },
+ },
+
+ [JZ4740_CLK_AIC] = {
+ "aic", CGU_CLK_GATE,
+ .parents = { JZ4740_CLK_EXT, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR, 5 },
+ },
+};
+
+static void __init jz4740_cgu_init(struct device_node *np)
+{
+ int retval;
+
+ cgu = ingenic_cgu_new(jz4740_cgu_clocks,
+ ARRAY_SIZE(jz4740_cgu_clocks), np);
+ if (!cgu) {
+ pr_err("%s: failed to initialise CGU\n", __func__);
+ return;
+ }
+
+ retval = ingenic_cgu_register_clocks(cgu);
+ if (retval)
+ pr_err("%s: failed to register CGU Clocks\n", __func__);
+}
+CLK_OF_DECLARE(jz4740_cgu, "ingenic,jz4740-cgu", jz4740_cgu_init);
+
+void jz4740_clock_set_wait_mode(enum jz4740_wait_mode mode)
+{
+ uint32_t lcr = readl(cgu->base + CGU_REG_LCR);
+
+ switch (mode) {
+ case JZ4740_WAIT_MODE_IDLE:
+ lcr &= ~LCR_SLEEP;
+ break;
+
+ case JZ4740_WAIT_MODE_SLEEP:
+ lcr |= LCR_SLEEP;
+ break;
+ }
+
+ writel(lcr, cgu->base + CGU_REG_LCR);
+}
+
+void jz4740_clock_udc_disable_auto_suspend(void)
+{
+ uint32_t clkgr = readl(cgu->base + CGU_REG_CLKGR);
+
+ clkgr &= ~CLKGR_UDC;
+ writel(clkgr, cgu->base + CGU_REG_CLKGR);
+}
+EXPORT_SYMBOL_GPL(jz4740_clock_udc_disable_auto_suspend);
+
+void jz4740_clock_udc_enable_auto_suspend(void)
+{
+ uint32_t clkgr = readl(cgu->base + CGU_REG_CLKGR);
+
+ clkgr |= CLKGR_UDC;
+ writel(clkgr, cgu->base + CGU_REG_CLKGR);
+}
+EXPORT_SYMBOL_GPL(jz4740_clock_udc_enable_auto_suspend);
+
+#define JZ_CLOCK_GATE_UART0 BIT(0)
+#define JZ_CLOCK_GATE_TCU BIT(1)
+#define JZ_CLOCK_GATE_DMAC BIT(12)
+
+void jz4740_clock_suspend(void)
+{
+ uint32_t clkgr, cppcr;
+
+ clkgr = readl(cgu->base + CGU_REG_CLKGR);
+ clkgr |= JZ_CLOCK_GATE_TCU | JZ_CLOCK_GATE_DMAC | JZ_CLOCK_GATE_UART0;
+ writel(clkgr, cgu->base + CGU_REG_CLKGR);
+
+ cppcr = readl(cgu->base + CGU_REG_CPPCR);
+ cppcr &= ~BIT(jz4740_cgu_clocks[JZ4740_CLK_PLL].pll.enable_bit);
+ writel(cppcr, cgu->base + CGU_REG_CPPCR);
+}
+
+void jz4740_clock_resume(void)
+{
+ uint32_t clkgr, cppcr, stable;
+
+ cppcr = readl(cgu->base + CGU_REG_CPPCR);
+ cppcr |= BIT(jz4740_cgu_clocks[JZ4740_CLK_PLL].pll.enable_bit);
+ writel(cppcr, cgu->base + CGU_REG_CPPCR);
+
+ stable = BIT(jz4740_cgu_clocks[JZ4740_CLK_PLL].pll.stable_bit);
+ do {
+ cppcr = readl(cgu->base + CGU_REG_CPPCR);
+ } while (!(cppcr & stable));
+
+ clkgr = readl(cgu->base + CGU_REG_CLKGR);
+ clkgr &= ~JZ_CLOCK_GATE_TCU;
+ clkgr &= ~JZ_CLOCK_GATE_DMAC;
+ clkgr &= ~JZ_CLOCK_GATE_UART0;
+ writel(clkgr, cgu->base + CGU_REG_CLKGR);
+}
diff --git a/drivers/clk/ingenic/jz4780-cgu.c b/drivers/clk/ingenic/jz4780-cgu.c
new file mode 100644
index 000000000000..431f962300b6
--- /dev/null
+++ b/drivers/clk/ingenic/jz4780-cgu.c
@@ -0,0 +1,733 @@
+/*
+ * Ingenic JZ4780 SoC CGU driver
+ *
+ * Copyright (c) 2013-2015 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <dt-bindings/clock/jz4780-cgu.h>
+#include "cgu.h"
+
+/* CGU register offsets */
+#define CGU_REG_CLOCKCONTROL 0x00
+#define CGU_REG_PLLCONTROL 0x0c
+#define CGU_REG_APLL 0x10
+#define CGU_REG_MPLL 0x14
+#define CGU_REG_EPLL 0x18
+#define CGU_REG_VPLL 0x1c
+#define CGU_REG_CLKGR0 0x20
+#define CGU_REG_OPCR 0x24
+#define CGU_REG_CLKGR1 0x28
+#define CGU_REG_DDRCDR 0x2c
+#define CGU_REG_VPUCDR 0x30
+#define CGU_REG_USBPCR 0x3c
+#define CGU_REG_USBRDT 0x40
+#define CGU_REG_USBVBFIL 0x44
+#define CGU_REG_USBPCR1 0x48
+#define CGU_REG_LP0CDR 0x54
+#define CGU_REG_I2SCDR 0x60
+#define CGU_REG_LP1CDR 0x64
+#define CGU_REG_MSC0CDR 0x68
+#define CGU_REG_UHCCDR 0x6c
+#define CGU_REG_SSICDR 0x74
+#define CGU_REG_CIMCDR 0x7c
+#define CGU_REG_PCMCDR 0x84
+#define CGU_REG_GPUCDR 0x88
+#define CGU_REG_HDMICDR 0x8c
+#define CGU_REG_MSC1CDR 0xa4
+#define CGU_REG_MSC2CDR 0xa8
+#define CGU_REG_BCHCDR 0xac
+#define CGU_REG_CLOCKSTATUS 0xd4
+
+/* bits within the OPCR register */
+#define OPCR_SPENDN0 (1 << 7)
+#define OPCR_SPENDN1 (1 << 6)
+
+/* bits within the USBPCR register */
+#define USBPCR_USB_MODE BIT(31)
+#define USBPCR_IDPULLUP_MASK (0x3 << 28)
+#define USBPCR_COMMONONN BIT(25)
+#define USBPCR_VBUSVLDEXT BIT(24)
+#define USBPCR_VBUSVLDEXTSEL BIT(23)
+#define USBPCR_POR BIT(22)
+#define USBPCR_OTG_DISABLE BIT(20)
+#define USBPCR_COMPDISTUNE_MASK (0x7 << 17)
+#define USBPCR_OTGTUNE_MASK (0x7 << 14)
+#define USBPCR_SQRXTUNE_MASK (0x7 << 11)
+#define USBPCR_TXFSLSTUNE_MASK (0xf << 7)
+#define USBPCR_TXPREEMPHTUNE BIT(6)
+#define USBPCR_TXHSXVTUNE_MASK (0x3 << 4)
+#define USBPCR_TXVREFTUNE_MASK 0xf
+
+/* bits within the USBPCR1 register */
+#define USBPCR1_REFCLKSEL_SHIFT 26
+#define USBPCR1_REFCLKSEL_MASK (0x3 << USBPCR1_REFCLKSEL_SHIFT)
+#define USBPCR1_REFCLKSEL_CORE (0x2 << USBPCR1_REFCLKSEL_SHIFT)
+#define USBPCR1_REFCLKDIV_SHIFT 24
+#define USBPCR1_REFCLKDIV_MASK (0x3 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_19_2 (0x3 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_48 (0x2 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_24 (0x1 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_12 (0x0 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_USB_SEL BIT(28)
+#define USBPCR1_WORD_IF0 BIT(19)
+#define USBPCR1_WORD_IF1 BIT(18)
+
+/* bits within the USBRDT register */
+#define USBRDT_VBFIL_LD_EN BIT(25)
+#define USBRDT_USBRDT_MASK 0x7fffff
+
+/* bits within the USBVBFIL register */
+#define USBVBFIL_IDDIGFIL_SHIFT 16
+#define USBVBFIL_IDDIGFIL_MASK (0xffff << USBVBFIL_IDDIGFIL_SHIFT)
+#define USBVBFIL_USBVBFIL_MASK (0xffff)
+
+static struct ingenic_cgu *cgu;
+
+static u8 jz4780_otg_phy_get_parent(struct clk_hw *hw)
+{
+ /* we only use CLKCORE, revisit if that ever changes */
+ return 0;
+}
+
+static int jz4780_otg_phy_set_parent(struct clk_hw *hw, u8 idx)
+{
+ unsigned long flags;
+ u32 usbpcr1;
+
+ if (idx > 0)
+ return -EINVAL;
+
+ spin_lock_irqsave(&cgu->lock, flags);
+
+ usbpcr1 = readl(cgu->base + CGU_REG_USBPCR1);
+ usbpcr1 &= ~USBPCR1_REFCLKSEL_MASK;
+ /* we only use CLKCORE */
+ usbpcr1 |= USBPCR1_REFCLKSEL_CORE;
+ writel(usbpcr1, cgu->base + CGU_REG_USBPCR1);
+
+ spin_unlock_irqrestore(&cgu->lock, flags);
+ return 0;
+}
+
+static unsigned long jz4780_otg_phy_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ u32 usbpcr1;
+ unsigned refclk_div;
+
+ usbpcr1 = readl(cgu->base + CGU_REG_USBPCR1);
+ refclk_div = usbpcr1 & USBPCR1_REFCLKDIV_MASK;
+
+ switch (refclk_div) {
+ case USBPCR1_REFCLKDIV_12:
+ return 12000000;
+
+ case USBPCR1_REFCLKDIV_24:
+ return 24000000;
+
+ case USBPCR1_REFCLKDIV_48:
+ return 48000000;
+
+ case USBPCR1_REFCLKDIV_19_2:
+ return 19200000;
+ }
+
+ BUG();
+ return parent_rate;
+}
+
+static long jz4780_otg_phy_round_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long *parent_rate)
+{
+ if (req_rate < 15600000)
+ return 12000000;
+
+ if (req_rate < 21600000)
+ return 19200000;
+
+ if (req_rate < 36000000)
+ return 24000000;
+
+ return 48000000;
+}
+
+static int jz4780_otg_phy_set_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long parent_rate)
+{
+ unsigned long flags;
+ u32 usbpcr1, div_bits;
+
+ switch (req_rate) {
+ case 12000000:
+ div_bits = USBPCR1_REFCLKDIV_12;
+ break;
+
+ case 19200000:
+ div_bits = USBPCR1_REFCLKDIV_19_2;
+ break;
+
+ case 24000000:
+ div_bits = USBPCR1_REFCLKDIV_24;
+ break;
+
+ case 48000000:
+ div_bits = USBPCR1_REFCLKDIV_48;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&cgu->lock, flags);
+
+ usbpcr1 = readl(cgu->base + CGU_REG_USBPCR1);
+ usbpcr1 &= ~USBPCR1_REFCLKDIV_MASK;
+ usbpcr1 |= div_bits;
+ writel(usbpcr1, cgu->base + CGU_REG_USBPCR1);
+
+ spin_unlock_irqrestore(&cgu->lock, flags);
+ return 0;
+}
+
+static struct clk_ops jz4780_otg_phy_ops = {
+ .get_parent = jz4780_otg_phy_get_parent,
+ .set_parent = jz4780_otg_phy_set_parent,
+
+ .recalc_rate = jz4780_otg_phy_recalc_rate,
+ .round_rate = jz4780_otg_phy_round_rate,
+ .set_rate = jz4780_otg_phy_set_rate,
+};
+
+static const s8 pll_od_encoding[16] = {
+ 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
+ 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
+};
+
+static const struct ingenic_cgu_clk_info jz4780_cgu_clocks[] = {
+
+ /* External clocks */
+
+ [JZ4780_CLK_EXCLK] = { "ext", CGU_CLK_EXT },
+ [JZ4780_CLK_RTCLK] = { "rtc", CGU_CLK_EXT },
+
+ /* PLLs */
+
+#define DEF_PLL(name) { \
+ .reg = CGU_REG_ ## name, \
+ .m_shift = 19, \
+ .m_bits = 13, \
+ .m_offset = 1, \
+ .n_shift = 13, \
+ .n_bits = 6, \
+ .n_offset = 1, \
+ .od_shift = 9, \
+ .od_bits = 4, \
+ .od_max = 16, \
+ .od_encoding = pll_od_encoding, \
+ .stable_bit = 6, \
+ .bypass_bit = 1, \
+ .enable_bit = 0, \
+}
+
+ [JZ4780_CLK_APLL] = {
+ "apll", CGU_CLK_PLL,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .pll = DEF_PLL(APLL),
+ },
+
+ [JZ4780_CLK_MPLL] = {
+ "mpll", CGU_CLK_PLL,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .pll = DEF_PLL(MPLL),
+ },
+
+ [JZ4780_CLK_EPLL] = {
+ "epll", CGU_CLK_PLL,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .pll = DEF_PLL(EPLL),
+ },
+
+ [JZ4780_CLK_VPLL] = {
+ "vpll", CGU_CLK_PLL,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .pll = DEF_PLL(VPLL),
+ },
+
+#undef DEF_PLL
+
+ /* Custom (SoC-specific) OTG PHY */
+
+ [JZ4780_CLK_OTGPHY] = {
+ "otg_phy", CGU_CLK_CUSTOM,
+ .parents = { -1, -1, JZ4780_CLK_EXCLK, -1 },
+ .custom = { &jz4780_otg_phy_ops },
+ },
+
+ /* Muxes & dividers */
+
+ [JZ4780_CLK_SCLKA] = {
+ "sclk_a", CGU_CLK_MUX,
+ .parents = { -1, JZ4780_CLK_APLL, JZ4780_CLK_EXCLK,
+ JZ4780_CLK_RTCLK },
+ .mux = { CGU_REG_CLOCKCONTROL, 30, 2 },
+ },
+
+ [JZ4780_CLK_CPUMUX] = {
+ "cpumux", CGU_CLK_MUX,
+ .parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_EPLL },
+ .mux = { CGU_REG_CLOCKCONTROL, 28, 2 },
+ },
+
+ [JZ4780_CLK_CPU] = {
+ "cpu", CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_CPUMUX, -1, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 0, 4, 22, -1, -1 },
+ },
+
+ [JZ4780_CLK_L2CACHE] = {
+ "l2cache", CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_CPUMUX, -1, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 4, 4, -1, -1, -1 },
+ },
+
+ [JZ4780_CLK_AHB0] = {
+ "ahb0", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_EPLL },
+ .mux = { CGU_REG_CLOCKCONTROL, 26, 2 },
+ .div = { CGU_REG_CLOCKCONTROL, 8, 4, 21, -1, -1 },
+ },
+
+ [JZ4780_CLK_AHB2PMUX] = {
+ "ahb2_apb_mux", CGU_CLK_MUX,
+ .parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_RTCLK },
+ .mux = { CGU_REG_CLOCKCONTROL, 24, 2 },
+ },
+
+ [JZ4780_CLK_AHB2] = {
+ "ahb2", CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_AHB2PMUX, -1, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 12, 4, 20, -1, -1 },
+ },
+
+ [JZ4780_CLK_PCLK] = {
+ "pclk", CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_AHB2PMUX, -1, -1, -1 },
+ .div = { CGU_REG_CLOCKCONTROL, 16, 4, 20, -1, -1 },
+ },
+
+ [JZ4780_CLK_DDR] = {
+ "ddr", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1 },
+ .mux = { CGU_REG_DDRCDR, 30, 2 },
+ .div = { CGU_REG_DDRCDR, 0, 4, 29, 28, 27 },
+ },
+
+ [JZ4780_CLK_VPU] = {
+ "vpu", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_EPLL, -1 },
+ .mux = { CGU_REG_VPUCDR, 30, 2 },
+ .div = { CGU_REG_VPUCDR, 0, 4, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR1, 2 },
+ },
+
+ [JZ4780_CLK_I2SPLL] = {
+ "i2s_pll", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_EPLL, -1, -1 },
+ .mux = { CGU_REG_I2SCDR, 30, 1 },
+ .div = { CGU_REG_I2SCDR, 0, 8, 29, 28, 27 },
+ },
+
+ [JZ4780_CLK_I2S] = {
+ "i2s", CGU_CLK_MUX,
+ .parents = { JZ4780_CLK_EXCLK, JZ4780_CLK_I2SPLL, -1, -1 },
+ .mux = { CGU_REG_I2SCDR, 31, 1 },
+ },
+
+ [JZ4780_CLK_LCD0PIXCLK] = {
+ "lcd0pixclk", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_VPLL, -1 },
+ .mux = { CGU_REG_LP0CDR, 30, 2 },
+ .div = { CGU_REG_LP0CDR, 0, 8, 28, 27, 26 },
+ },
+
+ [JZ4780_CLK_LCD1PIXCLK] = {
+ "lcd1pixclk", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_VPLL, -1 },
+ .mux = { CGU_REG_LP1CDR, 30, 2 },
+ .div = { CGU_REG_LP1CDR, 0, 8, 28, 27, 26 },
+ },
+
+ [JZ4780_CLK_MSCMUX] = {
+ "msc_mux", CGU_CLK_MUX,
+ .parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1 },
+ .mux = { CGU_REG_MSC0CDR, 30, 2 },
+ },
+
+ [JZ4780_CLK_MSC0] = {
+ "msc0", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
+ .div = { CGU_REG_MSC0CDR, 0, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR0, 3 },
+ },
+
+ [JZ4780_CLK_MSC1] = {
+ "msc1", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
+ .div = { CGU_REG_MSC1CDR, 0, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR0, 11 },
+ },
+
+ [JZ4780_CLK_MSC2] = {
+ "msc2", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_MSCMUX, -1, -1, -1 },
+ .div = { CGU_REG_MSC2CDR, 0, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR0, 12 },
+ },
+
+ [JZ4780_CLK_UHC] = {
+ "uhc", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_EPLL, JZ4780_CLK_OTGPHY },
+ .mux = { CGU_REG_UHCCDR, 30, 2 },
+ .div = { CGU_REG_UHCCDR, 0, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR0, 24 },
+ },
+
+ [JZ4780_CLK_SSIPLL] = {
+ "ssi_pll", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1, -1 },
+ .mux = { CGU_REG_SSICDR, 30, 1 },
+ .div = { CGU_REG_SSICDR, 0, 8, 29, 28, 27 },
+ },
+
+ [JZ4780_CLK_SSI] = {
+ "ssi", CGU_CLK_MUX,
+ .parents = { JZ4780_CLK_EXCLK, JZ4780_CLK_SSIPLL, -1, -1 },
+ .mux = { CGU_REG_SSICDR, 31, 1 },
+ },
+
+ [JZ4780_CLK_CIMMCLK] = {
+ "cim_mclk", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL, -1, -1 },
+ .mux = { CGU_REG_CIMCDR, 31, 1 },
+ .div = { CGU_REG_CIMCDR, 0, 8, 30, 29, 28 },
+ },
+
+ [JZ4780_CLK_PCMPLL] = {
+ "pcm_pll", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_EPLL, JZ4780_CLK_VPLL },
+ .mux = { CGU_REG_PCMCDR, 29, 2 },
+ .div = { CGU_REG_PCMCDR, 0, 8, 28, 27, 26 },
+ },
+
+ [JZ4780_CLK_PCM] = {
+ "pcm", CGU_CLK_MUX | CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, JZ4780_CLK_PCMPLL, -1, -1 },
+ .mux = { CGU_REG_PCMCDR, 31, 1 },
+ .gate = { CGU_REG_CLKGR1, 3 },
+ },
+
+ [JZ4780_CLK_GPU] = {
+ "gpu", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_EPLL },
+ .mux = { CGU_REG_GPUCDR, 30, 2 },
+ .div = { CGU_REG_GPUCDR, 0, 4, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR1, 4 },
+ },
+
+ [JZ4780_CLK_HDMI] = {
+ "hdmi", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_VPLL, -1 },
+ .mux = { CGU_REG_HDMICDR, 30, 2 },
+ .div = { CGU_REG_HDMICDR, 0, 8, 29, 28, 26 },
+ .gate = { CGU_REG_CLKGR1, 9 },
+ },
+
+ [JZ4780_CLK_BCH] = {
+ "bch", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { -1, JZ4780_CLK_SCLKA, JZ4780_CLK_MPLL,
+ JZ4780_CLK_EPLL },
+ .mux = { CGU_REG_BCHCDR, 30, 2 },
+ .div = { CGU_REG_BCHCDR, 0, 4, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR0, 1 },
+ },
+
+ /* Gate-only clocks */
+
+ [JZ4780_CLK_NEMC] = {
+ "nemc", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_AHB2, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 0 },
+ },
+
+ [JZ4780_CLK_OTG0] = {
+ "otg0", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 2 },
+ },
+
+ [JZ4780_CLK_SSI0] = {
+ "ssi0", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_SSI, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 4 },
+ },
+
+ [JZ4780_CLK_SMB0] = {
+ "smb0", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_PCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 5 },
+ },
+
+ [JZ4780_CLK_SMB1] = {
+ "smb1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_PCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 6 },
+ },
+
+ [JZ4780_CLK_SCC] = {
+ "scc", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 7 },
+ },
+
+ [JZ4780_CLK_AIC] = {
+ "aic", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 8 },
+ },
+
+ [JZ4780_CLK_TSSI0] = {
+ "tssi0", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 9 },
+ },
+
+ [JZ4780_CLK_OWI] = {
+ "owi", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 10 },
+ },
+
+ [JZ4780_CLK_KBC] = {
+ "kbc", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 13 },
+ },
+
+ [JZ4780_CLK_SADC] = {
+ "sadc", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 14 },
+ },
+
+ [JZ4780_CLK_UART0] = {
+ "uart0", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 15 },
+ },
+
+ [JZ4780_CLK_UART1] = {
+ "uart1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 16 },
+ },
+
+ [JZ4780_CLK_UART2] = {
+ "uart2", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 17 },
+ },
+
+ [JZ4780_CLK_UART3] = {
+ "uart3", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 18 },
+ },
+
+ [JZ4780_CLK_SSI1] = {
+ "ssi1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_SSI, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 19 },
+ },
+
+ [JZ4780_CLK_SSI2] = {
+ "ssi2", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_SSI, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 20 },
+ },
+
+ [JZ4780_CLK_PDMA] = {
+ "pdma", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 21 },
+ },
+
+ [JZ4780_CLK_GPS] = {
+ "gps", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 22 },
+ },
+
+ [JZ4780_CLK_MAC] = {
+ "mac", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 23 },
+ },
+
+ [JZ4780_CLK_SMB2] = {
+ "smb2", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_PCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 24 },
+ },
+
+ [JZ4780_CLK_CIM] = {
+ "cim", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 26 },
+ },
+
+ [JZ4780_CLK_LCD] = {
+ "lcd", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 28 },
+ },
+
+ [JZ4780_CLK_TVE] = {
+ "tve", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_LCD, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 27 },
+ },
+
+ [JZ4780_CLK_IPU] = {
+ "ipu", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 29 },
+ },
+
+ [JZ4780_CLK_DDR0] = {
+ "ddr0", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_DDR, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 30 },
+ },
+
+ [JZ4780_CLK_DDR1] = {
+ "ddr1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_DDR, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR0, 31 },
+ },
+
+ [JZ4780_CLK_SMB3] = {
+ "smb3", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_PCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 0 },
+ },
+
+ [JZ4780_CLK_TSSI1] = {
+ "tssi1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 1 },
+ },
+
+ [JZ4780_CLK_COMPRESS] = {
+ "compress", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 5 },
+ },
+
+ [JZ4780_CLK_AIC1] = {
+ "aic1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 6 },
+ },
+
+ [JZ4780_CLK_GPVLC] = {
+ "gpvlc", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 7 },
+ },
+
+ [JZ4780_CLK_OTG1] = {
+ "otg1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 8 },
+ },
+
+ [JZ4780_CLK_UART4] = {
+ "uart4", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 10 },
+ },
+
+ [JZ4780_CLK_AHBMON] = {
+ "ahb_mon", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 11 },
+ },
+
+ [JZ4780_CLK_SMB4] = {
+ "smb4", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_PCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 12 },
+ },
+
+ [JZ4780_CLK_DES] = {
+ "des", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 13 },
+ },
+
+ [JZ4780_CLK_X2D] = {
+ "x2d", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_EXCLK, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 14 },
+ },
+
+ [JZ4780_CLK_CORE1] = {
+ "core1", CGU_CLK_GATE,
+ .parents = { JZ4780_CLK_CPU, -1, -1, -1 },
+ .gate = { CGU_REG_CLKGR1, 15 },
+ },
+
+};
+
+static void __init jz4780_cgu_init(struct device_node *np)
+{
+ int retval;
+
+ cgu = ingenic_cgu_new(jz4780_cgu_clocks,
+ ARRAY_SIZE(jz4780_cgu_clocks), np);
+ if (!cgu) {
+ pr_err("%s: failed to initialise CGU\n", __func__);
+ return;
+ }
+
+ retval = ingenic_cgu_register_clocks(cgu);
+ if (retval) {
+ pr_err("%s: failed to register CGU Clocks\n", __func__);
+ return;
+ }
+}
+CLK_OF_DECLARE(jz4780_cgu, "ingenic,jz4780-cgu", jz4780_cgu_init);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-19 18:19:02 +0000