1 files changed, 153 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/dram_sun55i_a523.h b/arch/arm/include/asm/arch-sunxi/dram_sun55i_a523.h
new file mode 100644
index 00000000000..08bfe462856
--- /dev/null
+++ b/arch/arm/include/asm/arch-sunxi/dram_sun55i_a523.h
@@ -0,0 +1,153 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * t527 dram controller register and constant defines
+ *
+ * (C) Copyright 2024  Jernej Skrabec <jernej.skrabec@gmail.com>
+ */
+
+#ifndef _SUNXI_DRAM_SUN55I_A523_H
+#define _SUNXI_DRAM_SUN55I_A523_H
+
+#include <linux/bitops.h>
+
+enum sunxi_dram_type {
+	SUNXI_DRAM_TYPE_DDR3 = 3,
+	SUNXI_DRAM_TYPE_DDR4,
+	SUNXI_DRAM_TYPE_LPDDR3 = 7,
+	SUNXI_DRAM_TYPE_LPDDR4
+};
+
+#define MCTL_COM_UNK_008        0x008
+#define MCTL_COM_MAER0          0x020
+
+/*
+ * Controller registers seems to be the same or at least very similar
+ * to those in H6.
+ */
+struct sunxi_mctl_ctl_reg {
+	u32 mstr;		/* 0x000 */
+	u32 statr;		/* 0x004 unused */
+	u32 mstr1;		/* 0x008 unused */
+	u32 clken;		/* 0x00c */
+	u32 mrctrl0;		/* 0x010 unused */
+	u32 mrctrl1;		/* 0x014 unused */
+	u32 mrstatr;		/* 0x018 unused */
+	u32 mrctrl2;		/* 0x01c unused */
+	u32 derateen;		/* 0x020 unused */
+	u32 derateint;		/* 0x024 unused */
+	u8 reserved_0x028[8];	/* 0x028 */
+	u32 pwrctl;		/* 0x030 */
+	u32 pwrtmg;		/* 0x034 unused */
+	u32 hwlpctl;		/* 0x038 */
+	u8 reserved_0x03c[20];	/* 0x03c */
+	u32 rfshctl0;		/* 0x050 unused */
+	u32 rfshctl1;		/* 0x054 unused */
+	u8 reserved_0x058[8];	/* 0x058 */
+	u32 rfshctl3;		/* 0x060 */
+	u32 rfshtmg;		/* 0x064 */
+	u8 reserved_0x068[104];	/* 0x068 */
+	u32 init[8];		/* 0x0d0 */
+	u32 dimmctl;		/* 0x0f0 unused */
+	u32 rankctl;		/* 0x0f4 */
+	u8 reserved_0x0f8[8];	/* 0x0f8 */
+	u32 dramtmg[17];	/* 0x100 */
+	u8 reserved_0x144[60];	/* 0x144 */
+	u32 zqctl[3];		/* 0x180 */
+	u32 zqstat;		/* 0x18c unused */
+	u32 dfitmg0;		/* 0x190 */
+	u32 dfitmg1;		/* 0x194 */
+	u32 dfilpcfg[2];	/* 0x198 unused */
+	u32 dfiupd[3];		/* 0x1a0 */
+	u32 reserved_0x1ac;	/* 0x1ac */
+	u32 dfimisc;		/* 0x1b0 */
+	u32 dfitmg2;		/* 0x1b4 unused */
+	u32 dfitmg3;		/* 0x1b8 unused */
+	u32 dfistat;		/* 0x1bc */
+	u32 dbictl;		/* 0x1c0 */
+	u8 reserved_0x1c4[60];	/* 0x1c4 */
+	u32 addrmap[12];	/* 0x200 */
+	u8 reserved_0x230[16];	/* 0x230 */
+	u32 odtcfg;		/* 0x240 */
+	u32 odtmap;		/* 0x244 */
+	u8 reserved_0x248[8];	/* 0x248 */
+	u32 sched[2];		/* 0x250 */
+	u8 reserved_0x258[12];	/* 0x258 */
+	u32 unk_0x264;		/* 0x264 */
+	u8 reserved_0x268[8];	/* 0x268 */
+	u32 unk_0x270;		/* 0x270 */
+	u8 reserved_0x274[152];	/* 0x274 */
+	u32 dbgcmd;		/* 0x30c unused */
+	u32 dbgstat;		/* 0x310 unused */
+	u8 reserved_0x314[12];	/* 0x314 */
+	u32 swctl;		/* 0x320 */
+	u32 swstat;		/* 0x324 */
+	u8 reserved_0x328[7768];/* 0x328 */
+	u32 unk_0x2180;		/* 0x2180 */
+	u8 reserved_0x2184[188];/* 0x2184 */
+	u32 unk_0x2240;		/* 0x2240 */
+	u8 reserved_0x2244[3900];/* 0x2244 */
+	u32 unk_0x3180;		/* 0x3180 */
+	u8 reserved_0x3184[188];/* 0x3184 */
+	u32 unk_0x3240;		/* 0x3240 */
+	u8 reserved_0x3244[3900];/* 0x3244 */
+	u32 unk_0x4180;		/* 0x4180 */
+	u8 reserved_0x4184[188];/* 0x4184 */
+	u32 unk_0x4240;		/* 0x4240 */
+};
+check_member(sunxi_mctl_ctl_reg, swstat, 0x324);
+check_member(sunxi_mctl_ctl_reg, unk_0x4240, 0x4240);
+
+#define MSTR_DEVICETYPE_DDR3	BIT(0)
+#define MSTR_DEVICETYPE_LPDDR2	BIT(2)
+#define MSTR_DEVICETYPE_LPDDR3	BIT(3)
+#define MSTR_DEVICETYPE_DDR4	BIT(4)
+#define MSTR_DEVICETYPE_LPDDR4	BIT(5)
+#define MSTR_DEVICETYPE_MASK	GENMASK(5, 0)
+#define MSTR_2TMODE		BIT(10)
+#define MSTR_BUSWIDTH_FULL	(0 << 12)
+#define MSTR_BUSWIDTH_HALF	(1 << 12)
+#define MSTR_ACTIVE_RANKS(x)	((((x) == 2) ? 3 : 1) << 24)
+#define MSTR_BURST_LENGTH(x)	(((x) >> 1) << 16)
+
+#define TPR10_CA_BIT_DELAY	0xffff0000
+#define TPR10_DX_BIT_DELAY0	BIT(17)
+#define TPR10_DX_BIT_DELAY1	BIT(18)
+#define TPR10_WRITE_LEVELING	BIT(20)
+#define TPR10_READ_CALIBRATION	BIT(21)
+#define TPR10_READ_TRAINING	BIT(22)
+#define TPR10_WRITE_TRAINING	BIT(23)
+
+struct dram_para {
+	enum sunxi_dram_type type;
+	u32 dx_odt;
+	u32 dx_dri;
+	u32 ca_dri;
+	u32 tpr0;
+	u32 tpr1;
+	u32 tpr2;
+	u32 tpr6;
+	u32 tpr10;
+};
+
+struct dram_config {
+	u8 cols;
+	u8 rows;
+	u8 ranks;
+	u8 bus_full_width;
+	u32 clk;
+	u32 odt_en;
+	u32 tpr11;
+	u32 tpr12;
+	u32 tpr14;
+};
+
+static inline int ns_to_t(int nanoseconds, u32 clk)
+{
+	const unsigned int ctrl_freq = clk / 2;
+
+	return DIV_ROUND_UP(ctrl_freq * nanoseconds, 1000);
+}
+
+void mctl_set_timing_params(u32 clk);
+
+#endif /* _SUNXI_DRAM_SUN55I_T527_H */