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authorLaurence Withers <lwithers@guralp.com>2012-07-30 23:30:37 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-08-05 22:02:40 +0200
commit8abcd8ab962cd5fb2a4c025e7c7b62a9faf4aa08 (patch)
tree194059d2996f4f6b29010342f600ccacb2aeff2b
parent87e3917ecb412d7f3f8f3e1f572b37fc892202dc (diff)
downloadu-boot-linaro-stable-8abcd8ab962cd5fb2a4c025e7c7b62a9faf4aa08.tar.gz
DaVinci DA8xx: fix set_cpu_clk_info()
For the DA8xx family of SoCs, the set_cpu_clk_info() function was not initialising the DSP frequency, leading to 'bdinfo' command output such as: [...snip...] ARM frequency = 300 MHz DSP frequency = -536870913 MHz DDR frequency = 300 MHz This commit provides a separate implementation of set_cpu_clk_info() for the DA8xx SoCs that initialises the DSP frequency to zero (since currently the DSP is not enabled by U-Boot on any DA8xx platform). The separate implementation is justified because there is no common code between DA8xx and the other SoC families. It is now much easier to understand the flow of the two separate functions. Signed-off-by: Laurence Withers <lwithers@guralp.com> Cc: Tom Rini <trini@ti.com> Cc: Hadli, Manjunath <manjunath.hadli@ti.com> Cc: Heiko Schocher <hs@denx.de>
-rw-r--r--arch/arm/cpu/arm926ejs/davinci/cpu.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/arch/arm/cpu/arm926ejs/davinci/cpu.c b/arch/arm/cpu/arm926ejs/davinci/cpu.c
index 41201d0a4..b31add8de 100644
--- a/arch/arm/cpu/arm926ejs/davinci/cpu.c
+++ b/arch/arm/cpu/arm926ejs/davinci/cpu.c
@@ -117,6 +117,17 @@ int clk_get(enum davinci_clk_ids id)
out:
return pll_out;
}
+
+int set_cpu_clk_info(void)
+{
+ gd->bd->bi_arm_freq = clk_get(DAVINCI_ARM_CLKID) / 1000000;
+ /* DDR PHY uses an x2 input clock */
+ gd->bd->bi_ddr_freq = cpu_is_da830() ? 0 :
+ (clk_get(DAVINCI_DDR_CLKID) / 1000000);
+ gd->bd->bi_dsp_freq = 0;
+ return 0;
+}
+
#else /* CONFIG_SOC_DA8XX */
static unsigned pll_div(volatile void *pllbase, unsigned offset)
@@ -187,17 +198,9 @@ unsigned int davinci_clk_get(unsigned int div)
return pll_sysclk_mhz(DAVINCI_PLL_CNTRL0_BASE, div) * 1000000;
}
#endif
-#endif /* !CONFIG_SOC_DA8XX */
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 = cpu_is_da830() ? 0 :
- (clk_get(DAVINCI_DDR_CLKID) / 1000000);
-#else
-
unsigned int pllbase = DAVINCI_PLL_CNTRL0_BASE;
#if defined(CONFIG_SOC_DM365)
pllbase = DAVINCI_PLL_CNTRL1_BASE;
@@ -216,10 +219,12 @@ int set_cpu_clk_info(void)
pllbase = DAVINCI_PLL_CNTRL0_BASE;
#endif
gd->bd->bi_ddr_freq = pll_sysclk_mhz(pllbase, DDR_PLLDIV) / 2;
-#endif
+
return 0;
}
+#endif /* !CONFIG_SOC_DA8XX */
+
/*
* Initializes on-chip ethernet controllers.
* to override, implement board_eth_init()