diff options
| author | York Sun <yorksun@freescale.com> | 2015-01-06 13:18:49 -0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-02-24 13:09:14 -0800 |
| commit | b87e6f88e9218da3de371bb6cc8a34924153178e (patch) | |
| tree | fe1c672d5af630646b8c1193b9f00c2132e857f8 /arch/arm/cpu/armv8/fsl-lsch3/speed.c | |
| parent | 49fd1f3f265efc00d61effa995bd6a733bf273d8 (diff) | |
armv8/fsl-lsch3: Add support for second DDR clock
FSL-LSCH3 platforms can have multiple DDR clocks. LS2085A has one clock for
general DDR controlers, and another clock for DP-DDR. DDR driver needs to
change to support multiple clocks.
Signed-off-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/arm/cpu/armv8/fsl-lsch3/speed.c')
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-lsch3/speed.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/speed.c b/arch/arm/cpu/armv8/fsl-lsch3/speed.c index dc4a34bce5..72cd999c5f 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/speed.c +++ b/arch/arm/cpu/armv8/fsl-lsch3/speed.c @@ -77,8 +77,10 @@ void get_sys_info(struct sys_info *sys_info) sys_info->freq_systembus = sysclk; #ifdef CONFIG_DDR_CLK_FREQ sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ; + sys_info->freq_ddrbus2 = CONFIG_DDR_CLK_FREQ; #else sys_info->freq_ddrbus = sysclk; + sys_info->freq_ddrbus2 = sysclk; #endif sys_info->freq_systembus *= (in_le32(&gur->rcwsr[0]) >> @@ -87,6 +89,9 @@ void get_sys_info(struct sys_info *sys_info) sys_info->freq_ddrbus *= (in_le32(&gur->rcwsr[0]) >> FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_SHIFT) & FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_MASK; + sys_info->freq_ddrbus2 *= (in_le32(&gur->rcwsr[0]) >> + FSL_CHASSIS3_RCWSR0_MEM2_PLL_RAT_SHIFT) & + FSL_CHASSIS3_RCWSR0_MEM2_PLL_RAT_MASK; for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) { /* @@ -129,7 +134,7 @@ int get_clocks(void) gd->cpu_clk = sys_info.freq_processor[0]; gd->bus_clk = sys_info.freq_systembus; gd->mem_clk = sys_info.freq_ddrbus; - + gd->arch.mem2_clk = sys_info.freq_ddrbus2; #if defined(CONFIG_FSL_ESDHC) gd->arch.sdhc_clk = gd->bus_clk / 2; #endif /* defined(CONFIG_FSL_ESDHC) */ @@ -156,11 +161,18 @@ ulong get_bus_freq(ulong dummy) * get_ddr_freq * return ddr bus freq in Hz *********************************************/ -ulong get_ddr_freq(ulong dummy) +ulong get_ddr_freq(ulong ctrl_num) { if (!gd->mem_clk) get_clocks(); + /* + * DDR controller 0 & 1 are on memory complex 0 + * DDR controler 2 is on memory complext 1 + */ + if (ctrl_num >= 2) + return gd->arch.mem2_clk; + return gd->mem_clk; } |