diff options
| author | Ranjani Vaidyanathan <ra5478@freescale.com> | 2012-04-17 23:05:43 -0500 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-07-20 13:36:36 +0800 |
| commit | e9ae3491d8266b484440ed564574e669bbe14a24 (patch) | |
| tree | 3158862e9bcb3cc8c852b6decb020619cee50c90 /arch/arm/mach-mx6/clock.c | |
| parent | 29105af181bfc3841ed4f9d09c7b8ca31f402dc6 (diff) | |
ENGR00180185: MX6-Add support for low power audio playback
The DDR frequency needs to be at 50MHz for low power audio
playback. So added a new low power mode for audio.
Set the AHB to 25MHz, AXI to 50MHz and DDR to 50MHz in this
mode.
Signed-off-by: Ranjani Vaidyanathan <ra5478@freescale.com>
Diffstat (limited to 'arch/arm/mach-mx6/clock.c')
| -rw-r--r-- | arch/arm/mach-mx6/clock.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-mx6/clock.c b/arch/arm/mach-mx6/clock.c index 259ebac1d5cd..7ee0f3e9c643 100644 --- a/arch/arm/mach-mx6/clock.c +++ b/arch/arm/mach-mx6/clock.c @@ -47,6 +47,7 @@ extern struct regulator *cpu_regulator; extern struct cpu_op *(*get_cpu_op)(int *op); extern int lp_high_freq; extern int lp_med_freq; +extern int lp_audio_freq; void __iomem *apll_base; static struct clk pll1_sys_main_clk; @@ -2555,6 +2556,7 @@ static struct clk ssi1_clk = { #else .secondary = &mmdc_ch0_axi_clk[0], #endif + .flags = AHB_AUDIO_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static unsigned long _clk_ssi2_get_rate(struct clk *clk) @@ -2628,6 +2630,7 @@ static struct clk ssi2_clk = { #else .secondary = &mmdc_ch0_axi_clk[0], #endif + .flags = AHB_AUDIO_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static unsigned long _clk_ssi3_get_rate(struct clk *clk) @@ -2700,6 +2703,7 @@ static struct clk ssi3_clk = { #else .secondary = &mmdc_ch0_axi_clk[0], #endif + .flags = AHB_AUDIO_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static unsigned long _clk_ldb_di_round_rate(struct clk *clk, @@ -5342,6 +5346,7 @@ int __init mx6_clocks_init(unsigned long ckil, unsigned long osc, lp_high_freq = 0; lp_med_freq = 0; + lp_audio_freq = 0; /* Turn OFF all unnecessary PHYs. */ if (cpu_is_mx6q()) { |