diff options
Diffstat (limited to 'recipes-bsp/u-boot/u-boot-2012.04.01/0001-omap3_evm-Added-function-calls-to-set-volts-speed-on.patch')
| -rw-r--r-- | recipes-bsp/u-boot/u-boot-2012.04.01/0001-omap3_evm-Added-function-calls-to-set-volts-speed-on.patch | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/recipes-bsp/u-boot/u-boot-2012.04.01/0001-omap3_evm-Added-function-calls-to-set-volts-speed-on.patch b/recipes-bsp/u-boot/u-boot-2012.04.01/0001-omap3_evm-Added-function-calls-to-set-volts-speed-on.patch new file mode 100644 index 00000000..4fc6e98a --- /dev/null +++ b/recipes-bsp/u-boot/u-boot-2012.04.01/0001-omap3_evm-Added-function-calls-to-set-volts-speed-on.patch @@ -0,0 +1,146 @@ +From eff8924b57d21eadfe749e500617340b1a730c17 Mon Sep 17 00:00:00 2001 +From: Schuyler Patton <spatton@ti.com> +Date: Thu, 30 Jun 2011 13:39:25 -0500 +Subject: [PATCH 1/3] omap3_evm: Added function calls to set volts, speed on OMAP36xx parts + +* evm.c + +* Added setup calls to set voltage and speed + +* Added calls in misc_init_r to twl4030_power_mpu_init and set_mpu_clock + functions. These set VDD1 to 1.35v and mpu clock to 1GHz respectively. + There is a check performed to make sure that this is only called on + omap36xx class parts. + +* twl4030.c + +* Added twl4030_power_mpu_init function to set VDD1 to 1.35 Volts + +* This is done to allow omap36xx parts to run at 1GHz. + +* clock.c + +* Added set_mpu_clk function to allow u-boot to set the clock + rate. + +* sys_proto.h + +* Added the function prototype set_mpu_clock + +* twl4030.h + +* Added twl4030_power_mpu_init function prototype + +Upstream-Status: Pending + +Signed-off-by: Schuyler Patton <spatton@ti.com> +--- + arch/arm/cpu/armv7/omap3/clock.c | 15 +++++++++++++++ + arch/arm/include/asm/arch-omap3/sys_proto.h | 2 ++ + board/ti/evm/evm.c | 5 +++++ + drivers/power/twl4030.c | 12 ++++++++++++ + include/twl4030.h | 3 +++ + 5 files changed, 37 insertions(+), 0 deletions(-) + +diff --git a/arch/arm/cpu/armv7/omap3/clock.c b/arch/arm/cpu/armv7/omap3/clock.c +index 567817e..46a28a3 100644 +--- a/arch/arm/cpu/armv7/omap3/clock.c ++++ b/arch/arm/cpu/armv7/omap3/clock.c +@@ -35,6 +35,21 @@ + #include <command.h> + + /****************************************************************************** ++ * Setting the Clock speed ++ * ++ *****************************************************************************/ ++void set_mpu_clk(int speed) ++{ ++ struct prcm *prcm_base = (struct prcm *)PRCM_BASE; ++ ++ ++ /* Set M */ ++ sr32(&prcm_base->clksel1_pll_mpu, 8, 11, speed); ++ /* lock mode */ ++ sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOCK); ++} ++ ++/****************************************************************************** + * get_sys_clk_speed() - determine reference oscillator speed + * based on known 32kHz clock and gptimer. + *****************************************************************************/ +diff --git a/arch/arm/include/asm/arch-omap3/sys_proto.h b/arch/arm/include/asm/arch-omap3/sys_proto.h +index 2a89e56..9db13d7 100644 +--- a/arch/arm/include/asm/arch-omap3/sys_proto.h ++++ b/arch/arm/include/asm/arch-omap3/sys_proto.h +@@ -36,6 +36,8 @@ void prcm_init(void); + void per_clocks_enable(void); + void ehci_clocks_enable(void); + ++void set_mpu_clk(int speed); ++ + void memif_init(void); + void sdrc_init(void); + void do_sdrc_init(u32, u32); +diff --git a/board/ti/evm/evm.c b/board/ti/evm/evm.c +index 8497aee..91eb93d 100644 +--- a/board/ti/evm/evm.c ++++ b/board/ti/evm/evm.c +@@ -39,6 +39,7 @@ + #include <asm/mach-types.h> + #include <linux/mtd/nand.h> + #include "evm.h" ++#include <twl4030.h> + + #define OMAP3EVM_GPIO_ETH_RST_GEN1 64 + #define OMAP3EVM_GPIO_ETH_RST_GEN2 7 +@@ -177,6 +178,10 @@ int misc_init_r(void) + #endif + dieid_num_r(); + ++ if (get_cpu_family() == CPU_OMAP36XX) { ++ twl4030_power_mpu_init(); ++ set_mpu_clk(500); ++ } + return 0; + } + +diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c +index 36b2144..670b4cb 100644 +--- a/drivers/power/twl4030.c ++++ b/drivers/power/twl4030.c +@@ -105,6 +105,18 @@ void twl4030_power_init(void) + TWL4030_PM_RECEIVER_DEV_GRP_P1); + } + ++#define VDD1_VSEL_135 0x3C ++ ++void twl4030_power_mpu_init(void) ++{ ++ unsigned char byte; ++ ++ /* 1.4 Volts */ ++ byte = VDD1_VSEL_135; ++ twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte, ++ TWL4030_PM_RECEIVER_VDD1_VSEL); ++} ++ + void twl4030_power_mmc_init(void) + { + /* Set VMMC1 to 3.15 Volts */ +diff --git a/include/twl4030.h b/include/twl4030.h +index 9cd32ab..91d36b8 100644 +--- a/include/twl4030.h ++++ b/include/twl4030.h +@@ -510,6 +510,9 @@ static inline int twl4030_i2c_read_u8(u8 chip_no, u8 *val, u8 reg) + * Power + */ + ++/*For setting VDD1 */ ++void twl4030_power_mpu_init(void); ++ + /* For hardware resetting */ + void twl4030_power_reset_init(void); + /* For setting device group and voltage */ +-- +1.7.0.4 + |