[PATCH] AM33xx: Make OSC frequency board depended
Sascha Hauer
s.hauer at pengutronix.de
Thu Aug 22 03:04:21 EDT 2013
On Tue, Aug 20, 2013 at 02:10:04PM +0200, Teresa Gámez wrote:
> The oscillator frequency varies on different AM33xx boards.
> Pass the osc frequency from lowlevel board code
> to set the correct one on every board.
>
> Signed-off-by: Teresa Gámez <t.gamez at phytec.de>
Applied, thanks
Sascha
> ---
> arch/arm/boards/beaglebone/lowlevel.c | 2 +-
> arch/arm/boards/pcm051/lowlevel.c | 2 +-
> arch/arm/mach-omap/am33xx_clock.c | 26 ++++++++++++------------
> arch/arm/mach-omap/include/mach/am33xx-clock.h | 8 +------
> 4 files changed, 16 insertions(+), 22 deletions(-)
>
> diff --git a/arch/arm/boards/beaglebone/lowlevel.c b/arch/arm/boards/beaglebone/lowlevel.c
> index d871ca1..2f3b3df 100644
> --- a/arch/arm/boards/beaglebone/lowlevel.c
> +++ b/arch/arm/boards/beaglebone/lowlevel.c
> @@ -198,7 +198,7 @@ void beaglebone_sram_init(void)
> u32 regVal, uart_base;
>
> /* Setup the PLLs and the clocks for the peripherals */
> - pll_init(MPUPLL_M_500);
> + pll_init(MPUPLL_M_500, 24);
>
> beaglebone_config_ddr();
>
> diff --git a/arch/arm/boards/pcm051/lowlevel.c b/arch/arm/boards/pcm051/lowlevel.c
> index f4a1742..dd06c6a 100644
> --- a/arch/arm/boards/pcm051/lowlevel.c
> +++ b/arch/arm/boards/pcm051/lowlevel.c
> @@ -159,7 +159,7 @@ void pcm051_sram_init(void)
> u32 regVal, uart_base;
>
> /* Setup the PLLs and the clocks for the peripherals */
> - pll_init(MPUPLL_M_600);
> + pll_init(MPUPLL_M_600, 25);
>
> pcm051_config_ddr();
>
> diff --git a/arch/arm/mach-omap/am33xx_clock.c b/arch/arm/mach-omap/am33xx_clock.c
> index 9928e9f..c6cae42 100644
> --- a/arch/arm/mach-omap/am33xx_clock.c
> +++ b/arch/arm/mach-omap/am33xx_clock.c
> @@ -156,7 +156,7 @@ static void per_clocks_enable(void)
> while (__raw_readl(CM_PER_SPI1_CLKCTRL) != PRCM_MOD_EN);
> }
>
> -static void mpu_pll_config(int mpupll_M)
> +static void mpu_pll_config(int mpupll_M, int osc)
> {
> u32 clkmode, clksel, div_m2;
>
> @@ -170,7 +170,7 @@ static void mpu_pll_config(int mpupll_M)
> while(__raw_readl(CM_IDLEST_DPLL_MPU) != 0x00000100);
>
> clksel = clksel & (~0x7ffff);
> - clksel = clksel | ((mpupll_M << 0x8) | MPUPLL_N);
> + clksel = clksel | ((mpupll_M << 0x8) | (osc - 1));
> __raw_writel(clksel, CM_CLKSEL_DPLL_MPU);
>
> div_m2 = div_m2 & ~0x1f;
> @@ -183,7 +183,7 @@ static void mpu_pll_config(int mpupll_M)
> while(__raw_readl(CM_IDLEST_DPLL_MPU) != 0x1);
> }
>
> -static void core_pll_config(void)
> +static void core_pll_config(int osc)
> {
> u32 clkmode, clksel, div_m4, div_m5, div_m6;
>
> @@ -199,7 +199,7 @@ static void core_pll_config(void)
> while(__raw_readl(CM_IDLEST_DPLL_CORE) != 0x00000100);
>
> clksel = clksel & (~0x7ffff);
> - clksel = clksel | ((COREPLL_M << 0x8) | COREPLL_N);
> + clksel = clksel | ((COREPLL_M << 0x8) | (osc - 1));
> __raw_writel(clksel, CM_CLKSEL_DPLL_CORE);
>
> div_m4 = div_m4 & ~0x1f;
> @@ -221,7 +221,7 @@ static void core_pll_config(void)
> while(__raw_readl(CM_IDLEST_DPLL_CORE) != 0x1);
> }
>
> -static void per_pll_config(void)
> +static void per_pll_config(int osc)
> {
> u32 clkmode, clksel, div_m2;
>
> @@ -235,7 +235,7 @@ static void per_pll_config(void)
> while(__raw_readl(CM_IDLEST_DPLL_PER) != 0x00000100);
>
> clksel = clksel & (~0x7ffff);
> - clksel = clksel | ((PERPLL_M << 0x8) | PERPLL_N);
> + clksel = clksel | ((PERPLL_M << 0x8) | (osc - 1));
> __raw_writel(clksel, CM_CLKSEL_DPLL_PER);
>
> div_m2 = div_m2 & ~0x7f;
> @@ -248,7 +248,7 @@ static void per_pll_config(void)
> while(__raw_readl(CM_IDLEST_DPLL_PER) != 0x1);
> }
>
> -static void ddr_pll_config(void)
> +static void ddr_pll_config(int osc)
> {
> u32 clkmode, clksel, div_m2;
>
> @@ -263,7 +263,7 @@ static void ddr_pll_config(void)
> while ((__raw_readl(CM_IDLEST_DPLL_DDR) & 0x00000100) != 0x00000100);
>
> clksel = clksel & (~0x7ffff);
> - clksel = clksel | ((DDRPLL_M << 0x8) | DDRPLL_N);
> + clksel = clksel | ((DDRPLL_M << 0x8) | (osc - 1));
> __raw_writel(clksel, CM_CLKSEL_DPLL_DDR);
>
> div_m2 = div_m2 & 0xFFFFFFE0;
> @@ -294,12 +294,12 @@ void enable_ddr_clocks(void)
> /*
> * Configure the PLL/PRCM for necessary peripherals
> */
> -void pll_init(int mpupll_M)
> +void pll_init(int mpupll_M, int osc)
> {
> - mpu_pll_config(mpupll_M);
> - core_pll_config();
> - per_pll_config();
> - ddr_pll_config();
> + mpu_pll_config(mpupll_M, osc);
> + core_pll_config(osc);
> + per_pll_config(osc);
> + ddr_pll_config(osc);
> /* Enable the required interconnect clocks */
> interface_clocks_enable();
> /* Enable power domain transition */
> diff --git a/arch/arm/mach-omap/include/mach/am33xx-clock.h b/arch/arm/mach-omap/include/mach/am33xx-clock.h
> index 968509e..6035da6 100644
> --- a/arch/arm/mach-omap/include/mach/am33xx-clock.h
> +++ b/arch/arm/mach-omap/include/mach/am33xx-clock.h
> @@ -23,20 +23,16 @@
>
> /* Put the pll config values over here */
>
> -#define OSC 24
> -
> /* MAIN PLL Fdll = 1 GHZ, */
> #define MPUPLL_M_500 500 /* 125 * n */
> #define MPUPLL_M_550 550 /* 125 * n */
> #define MPUPLL_M_600 600 /* 125 * n */
> #define MPUPLL_M_720 720 /* 125 * n */
>
> -#define MPUPLL_N (OSC - 1)
> #define MPUPLL_M2 1
>
> /* Core PLL Fdll = 1 GHZ, */
> #define COREPLL_M 1000 /* 125 * n */
> -#define COREPLL_N (OSC - 1)
>
> #define COREPLL_M4 10 /* CORE_CLKOUTM4 = 200 MHZ */
> #define COREPLL_M5 8 /* CORE_CLKOUTM5 = 250 MHZ */
> @@ -48,13 +44,11 @@
> * For clkout = 192 MHZ, Fdll = 960 MHZ, divider values are given below
> */
> #define PERPLL_M 960
> -#define PERPLL_N (OSC - 1)
> #define PERPLL_M2 5
>
> /* DDR Freq is 266 MHZ for now*/
> /* Set Fdll = 400 MHZ , Fdll = M * 2 * CLKINP/ N + 1; clkout = Fdll /(2 * M2) */
> #define DDRPLL_M 266
> -#define DDRPLL_N (OSC - 1)
> #define DDRPLL_M2 1
>
> /* PRCM */
> @@ -187,7 +181,7 @@
>
> #define CM_ALWON_GPMC_CLKCTRL CM_PER_GPMC_CLKCTRL
>
> -extern void pll_init(int mpupll_M);
> +extern void pll_init(int mpupll_M, int osc);
> extern void enable_ddr_clocks(void);
>
> #endif /* endif _AM33XX_CLOCKS_H_ */
> --
> 1.7.0.4
>
>
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