From b971dfad6a1c8c37857390d847ee22ec7af4aee2 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Tue, 3 Jul 2012 09:20:06 -0700 Subject: [PATCH] am33xx: Move the call to ddr_pll_config, make it take the frequency Depending on if we have DDR2 or DDR3 on the board we will need to call ddr_pll_config with a different value. This call can be delayed slightly to the point where we know which type of memory we have. Signed-off-by: Tom Rini --- arch/arm/cpu/armv7/am33xx/clock.c | 5 ++--- arch/arm/cpu/armv7/am33xx/emif4.c | 2 ++ arch/arm/include/asm/arch-am33xx/sys_proto.h | 1 + 3 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c index f068824..1071f92 100644 --- a/arch/arm/cpu/armv7/am33xx/clock.c +++ b/arch/arm/cpu/armv7/am33xx/clock.c @@ -246,7 +246,7 @@ static void per_pll_config(void) ; } -static void ddr_pll_config(void) +void ddr_pll_config(unsigned int ddrpll_m) { u32 clkmode, clksel, div_m2; @@ -264,7 +264,7 @@ static void ddr_pll_config(void) ; clksel = clksel & (~CLK_SEL_MASK); - clksel = clksel | ((DDRPLL_M << CLK_SEL_SHIFT) | DDRPLL_N); + clksel = clksel | ((ddrpll_m << CLK_SEL_SHIFT) | DDRPLL_N); writel(clksel, &cmwkup->clkseldpllddr); div_m2 = div_m2 & CLK_DIV_SEL; @@ -298,7 +298,6 @@ void pll_init() mpu_pll_config(); core_pll_config(); per_pll_config(); - ddr_pll_config(); /* Enable the required interconnect clocks */ enable_interface_clocks(); diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c index 9b1a80c..12f270a 100644 --- a/arch/arm/cpu/armv7/am33xx/emif4.c +++ b/arch/arm/cpu/armv7/am33xx/emif4.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include @@ -150,6 +151,7 @@ void config_ddr(short ddr_type) enable_emif_clocks(); if (ddr_type == EMIF_REG_SDRAM_TYPE_DDR2) { + ddr_pll_config(266); config_vtp(); config_cmd_ctrl(&ddr2_cmd_ctrl_data); diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h index 6c58f1b..eef5573 100644 --- a/arch/arm/include/asm/arch-am33xx/sys_proto.h +++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h @@ -30,4 +30,5 @@ int print_cpuinfo(void); u32 get_device_type(void); void setup_clocks_for_console(void); +void ddr_pll_config(unsigned int ddrpll_M); #endif -- 2.7.4