From: Sudhakar Rajashekhara sudhakar.raj@ti.com
Add support for multiple PLL controllers and in the process, modify the clk_get() to work for multiple PLL controllers.
Signed-off-by: Sudhakar Rajashekhara sudhakar.raj@ti.com Signed-off-by: Nagabhushana Netagunte nagabhushana.netagunte@ti.com --- arch/arm/cpu/arm926ejs/davinci/cpu.c | 27 +++++++++++++++---------- arch/arm/include/asm/arch-davinci/hardware.h | 1 + 2 files changed, 17 insertions(+), 11 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/davinci/cpu.c b/arch/arm/cpu/arm926ejs/davinci/cpu.c index 8b57205..3ab56c7 100644 --- a/arch/arm/cpu/arm926ejs/davinci/cpu.c +++ b/arch/arm/cpu/arm926ejs/davinci/cpu.c @@ -37,6 +37,7 @@ #define PLLC_PLLDIV4 0x160 #define PLLC_PLLDIV5 0x164 #define PLLC_PLLDIV6 0x168 +#define PLLC_PLLDIV7 0x16c #define PLLC_PLLDIV8 0x170 #define PLLC_PLLDIV9 0x174
@@ -61,11 +62,9 @@ #endif
#ifdef CONFIG_SOC_DA8XX -const dv_reg * const sysdiv[7] = { - &davinci_pllc_regs->plldiv1, &davinci_pllc_regs->plldiv2, - &davinci_pllc_regs->plldiv3, &davinci_pllc_regs->plldiv4, - &davinci_pllc_regs->plldiv5, &davinci_pllc_regs->plldiv6, - &davinci_pllc_regs->plldiv7 +unsigned int sysdiv[9] = { + PLLC_PLLDIV1, PLLC_PLLDIV2, PLLC_PLLDIV3, PLLC_PLLDIV4, PLLC_PLLDIV5, + PLLC_PLLDIV6, PLLC_PLLDIV7, PLLC_PLLDIV8, PLLC_PLLDIV9 };
int clk_get(enum davinci_clk_ids id) @@ -74,19 +73,26 @@ int clk_get(enum davinci_clk_ids id) int pllm; int post_div; int pll_out; + volatile unsigned int pll_base;
pll_out = CONFIG_SYS_OSCIN_FREQ;
if (id == DAVINCI_AUXCLK_CLKID) goto out;
+ if ((id >> 16) == 1) + pll_base = DAVINCI_PLL_CNTRL1_BASE; + else + pll_base = DAVINCI_PLL_CNTRL0_BASE; + + id &= 0xFFFF; + /* * Lets keep this simple. Combining operations can result in * unexpected approximations */ - pre_div = (readl(&davinci_pllc_regs->prediv) & - DAVINCI_PLLC_DIV_MASK) + 1; - pllm = readl(&davinci_pllc_regs->pllm) + 1; + pre_div = (REG(pll_base + PLLC_PREDIV) & 0xff) + 1; + pllm = REG(pll_base + PLLC_PLLM) + 1;
pll_out /= pre_div; pll_out *= pllm; @@ -94,15 +100,14 @@ int clk_get(enum davinci_clk_ids id) if (id == DAVINCI_PLLM_CLKID) goto out;
- post_div = (readl(&davinci_pllc_regs->postdiv) & - DAVINCI_PLLC_DIV_MASK) + 1; + post_div = (REG(pll_base + PLLC_POSTDIV) & 0xff) + 1;
pll_out /= post_div;
if (id == DAVINCI_PLLC_CLKID) goto out;
- pll_out /= (readl(sysdiv[id - 1]) & DAVINCI_PLLC_DIV_MASK) + 1; + pll_out /= (REG(pll_base + sysdiv[id - 1]) & 0xff) + 1;
out: return pll_out; diff --git a/arch/arm/include/asm/arch-davinci/hardware.h b/arch/arm/include/asm/arch-davinci/hardware.h index df3f549..d2b2989 100644 --- a/arch/arm/include/asm/arch-davinci/hardware.h +++ b/arch/arm/include/asm/arch-davinci/hardware.h @@ -129,6 +129,7 @@ typedef volatile unsigned int * dv_reg_p; #define DAVINCI_TIMER1_BASE 0x01c21000 #define DAVINCI_WDOG_BASE 0x01c21000 #define DAVINCI_PLL_CNTRL0_BASE 0x01c11000 +#define DAVINCI_PLL_CNTRL1_BASE 0x01e1a000 #define DAVINCI_PSC0_BASE 0x01c10000 #define DAVINCI_PSC1_BASE 0x01e27000 #define DAVINCI_SPI0_BASE 0x01c41000