diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/clocks-common.c')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/clocks-common.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c index 818a96337e..9ed18995ea 100644 --- a/arch/arm/cpu/armv7/omap-common/clocks-common.c +++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c @@ -55,11 +55,12 @@ const u32 sys_clk_array[8] = { 26000000, /* 26 MHz */ 27000000, /* 27 MHz */ 38400000, /* 38.4 MHz */ + 20000000, /* 20 MHz */ }; static inline u32 __get_sys_clk_index(void) { - u32 ind; + s8 ind; /* * For ES1 the ROM code calibration of sys clock is not reliable * due to hw issue. So, use hard-coded value. If this value is not @@ -73,6 +74,13 @@ static inline u32 __get_sys_clk_index(void) /* SYS_CLKSEL - 1 to match the dpll param array indices */ ind = (readl((*prcm)->cm_sys_clksel) & CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1; + /* + * SYS_CLKSEL value for 20MHz is 0. This is introduced newly + * in DRA7XX socs. SYS_CLKSEL -1 will be greater than + * NUM_SYS_CLK. So considering the last 3 bits as the index + * for the dpll param array. + */ + ind &= CM_SYS_CLKSEL_SYS_CLKSEL_MASK; } return ind; } @@ -201,12 +209,25 @@ const struct dpll_params *get_abe_dpll_params(struct dplls const *dpll_data) #endif } +static const struct dpll_params *get_ddr_dpll_params + (struct dplls const *dpll_data) +{ + u32 sysclk_ind = get_sys_clk_index(); + + if (!dpll_data->ddr) + return NULL; + return &dpll_data->ddr[sysclk_ind]; +} + static void do_setup_dpll(u32 const base, const struct dpll_params *params, u8 lock, char *dpll) { u32 temp, M, N; struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + if (!params) + return; + temp = readl(&dpll_regs->cm_clksel_dpll); if (check_for_lock(base)) { @@ -397,6 +418,9 @@ static void setup_dplls(void) #ifdef CONFIG_USB_EHCI_OMAP setup_usb_dpll(); #endif + params = get_ddr_dpll_params(*dplls_data); + do_setup_dpll((*prcm)->cm_clkmode_dpll_ddrphy, + params, DPLL_LOCK, "ddr"); } #ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL |