1 files changed, 146 insertions, 0 deletions

diff --git a/recipes-bsp/u-boot/u-boot-am37x-2012.04.01/0001-omap3_evm-Added-function-calls-to-set-volts-speed-on.patch b/recipes-bsp/u-boot/u-boot-am37x-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-am37x-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
+