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DaVinci DA8xx: replace magic number for DDR speed

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Replace a magic number for the DDR2/mDDR PHY clock ID with a proper
definition. In addition, don't request this clock ID on DA830 hardware,
which does not have a DDR2/mDDR PHY (or associated PLL controller).

Signed-off-by: Laurence Withers <lwithers@guralp.com>
Cc: Tom Rini <trini@ti.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
This commit is contained in:
Laurence Withers 2012-07-30 23:30:36 +00:00 • committed by Albert ARIBAUD
parent 88ac6b9d14
commit de9d2e3d60
2 changed files with 4 additions and 1 deletions
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3
arch/arm/cpu/arm926ejs/davinci/cpu.c
View file

@ -194,7 +194,8 @@ int set_cpu_clk_info(void)
#ifdef CONFIG_SOC_DA8XX
gd->bd->bi_arm_freq = clk_get(DAVINCI_ARM_CLKID) / 1000000;
/* DDR PHY uses an x2 input clock */
gd->bd->bi_ddr_freq = clk_get(0x10001) / 1000000;
gd->bd->bi_ddr_freq = cpu_is_da830() ? 0 :
(clk_get(DAVINCI_DDR_CLKID) / 1000000);
#else
unsigned int pllbase = DAVINCI_PLL_CNTRL0_BASE;

2
arch/arm/include/asm/arch-davinci/hardware.h
View file

@ -459,10 +459,12 @@ enum davinci_clk_ids {
DAVINCI_PLL0_SYSCLK2 = DAVINCI_PLLC0_FLAG | 2,
DAVINCI_PLL0_SYSCLK4 = DAVINCI_PLLC0_FLAG | 4,
DAVINCI_PLL0_SYSCLK6 = DAVINCI_PLLC0_FLAG | 6,
DAVINCI_PLL1_SYSCLK1 = DAVINCI_PLLC1_FLAG | 1,
DAVINCI_PLL1_SYSCLK2 = DAVINCI_PLLC1_FLAG | 2,
/* map peripherals to clock IDs */
DAVINCI_ARM_CLKID = DAVINCI_PLL0_SYSCLK6,
DAVINCI_DDR_CLKID = DAVINCI_PLL1_SYSCLK1,
DAVINCI_MDIO_CLKID = DAVINCI_PLL0_SYSCLK4,
DAVINCI_MMC_CLKID = DAVINCI_PLL0_SYSCLK2,
DAVINCI_SPI0_CLKID = DAVINCI_PLL0_SYSCLK2,