diff options
Diffstat (limited to 'arch/arm/mach-mx5/board-mx51_babbage.c')
| -rwxr-xr-x | arch/arm/mach-mx5/board-mx51_babbage.c | 69 |
1 files changed, 64 insertions, 5 deletions
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c index 1b5614f16d17..0db1fdacf236 100755 --- a/arch/arm/mach-mx5/board-mx51_babbage.c +++ b/arch/arm/mach-mx5/board-mx51_babbage.c @@ -1,5 +1,5 @@ /* - * Copyright 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com> * * The code contained herein is licensed under the GNU General Public @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/clk.h> #include <linux/platform_device.h> +#include <linux/regulator/consumer.h> #include <linux/i2c.h> #include <linux/gpio.h> #include <linux/delay.h> @@ -32,6 +33,7 @@ #include <mach/iomux-mx51.h> #include <mach/mxc_ehci.h> #include <mach/ipu-v3.h> +#include <mach/mxc_dvfs.h> #include <asm/irq.h> #include <asm/setup.h> @@ -81,6 +83,13 @@ #define MX51_USB_PLL_DIV_19_2_MHZ 0x01 #define MX51_USB_PLL_DIV_24_MHZ 0x02 +extern char *gp_reg_id; +extern char *lp_reg_id; +extern struct regulator *(*get_cpu_regulator)(void); +extern void (*put_cpu_regulator)(void); + +static struct regulator *cpu_regulator; + static struct gpio_keys_button babbage_buttons[] = { { .gpio = BABBAGE_POWER_KEY, @@ -222,6 +231,34 @@ static iomux_v3_cfg_t mx51babbage_pads[] = { MX51_PAD_OWIRE_LINE__SPDIF_OUT, }; +static struct mxc_dvfs_platform_data bbg_dvfscore_data = { + .reg_id = "cpu_vcc", + .clk1_id = "cpu_clk", + .clk2_id = "gpc_dvfs_clk", + .gpc_cntr_offset = MXC_GPC_CNTR_OFFSET, + .gpc_vcr_offset = MXC_GPC_VCR_OFFSET, + .ccm_cdcr_offset = MXC_CCM_CDCR_OFFSET, + .ccm_cacrr_offset = MXC_CCM_CACRR_OFFSET, + .ccm_cdhipr_offset = MXC_CCM_CDHIPR_OFFSET, + .prediv_mask = 0x1F800, + .prediv_offset = 11, + .prediv_val = 3, + .div3ck_mask = 0xE0000000, + .div3ck_offset = 29, + .div3ck_val = 2, + .emac_val = 0x08, + .upthr_val = 25, + .dnthr_val = 9, + .pncthr_val = 33, + .upcnt_val = 10, + .dncnt_val = 10, + .delay_time = 30, +}; + +static struct mxc_regulator_platform_data bbg_regulator_data = { + .cpu_reg_id = "cpu_vcc", +}; + /* Serial ports */ static const struct imxuart_platform_data uart_pdata __initconst = { .flags = IMXUART_HAVE_RTSCTS, @@ -245,11 +282,11 @@ static const struct esdhc_platform_data mx51_bbg_sd2_data __initconst = { .cd_gpio = MX51_BBG_SD2_CD, }; -static void babbage_suspend_enter() +static void babbage_suspend_enter(void) { } -static void babbage_suspend_exit() +static void babbage_suspend_exit(void) { /*clear the EMPGC0/1 bits */ __raw_writel(0, MXC_SRPG_EMPGC0_SRPGCR); @@ -480,13 +517,13 @@ static struct fsl_mxc_lcd_platform_data vga_data = { .reset = vga_reset, }; -static void ddc_dvi_init() +static void ddc_dvi_init(void) { /* enable DVI I2C */ gpio_set_value(BABBAGE_DVI_I2C_EN, 1); } -static int ddc_dvi_update() +static int ddc_dvi_update(void) { /* DVI cable state */ if (gpio_get_value(BABBAGE_DVI_DET) == 1) @@ -525,6 +562,20 @@ static struct i2c_board_info mxc_i2c_hs_board_info[] __initdata = { static struct mxc_gpu_platform_data gpu_data __initdata; +static struct regulator *mx51_bbg_get_cpu_regulator(void) +{ + if (cpu_regulator == NULL) + cpu_regulator = regulator_get(NULL, gp_reg_id); + return cpu_regulator; +} + +static void mx51_bbg_put_cpu_regulator(void) +{ + if (cpu_regulator != NULL) + regulator_put(cpu_regulator); + cpu_regulator = NULL; +} + static void __init fixup_mxc_board(struct machine_desc *desc, struct tag *tags, char **cmdline, struct meminfo *mi) { @@ -536,6 +587,9 @@ static void __init fixup_mxc_board(struct machine_desc *desc, struct tag *tags, int fb_mem = 0; char *str; + get_cpu_regulator = mx51_bbg_get_cpu_regulator; + put_cpu_regulator = mx51_bbg_put_cpu_regulator; + for_each_tag(mem_tag, tags) { if (mem_tag->hdr.tag == ATAG_MEM) { total_mem = mem_tag->u.mem.size; @@ -641,6 +695,9 @@ static void __init mx51_babbage_init(void) mxc_iomux_v3_setup_multiple_pads(mx51babbage_pads, ARRAY_SIZE(mx51babbage_pads)); + gp_reg_id = bbg_regulator_data.cpu_reg_id; + lp_reg_id = bbg_regulator_data.vcc_reg_id; + mxc_spdif_data.spdif_core_clk = clk_get(NULL, "spdif_xtal_clk"); clk_put(mxc_spdif_data.spdif_core_clk); @@ -766,6 +823,8 @@ static void __init mx51_babbage_init(void) mxc_register_device(&bbg_audio_device, &bbg_audio_data); imx51_add_imx_ssi(1, &bbg_ssi_pdata); + imx51_add_dvfs_core(&bbg_dvfscore_data); + imx51_add_busfreq(); } static void __init mx51_babbage_timer_init(void) |