diff options
| author | Frank Li <Frank.Li@freescale.com> | 2010-04-16 15:00:25 +0800 |
|---|---|---|
| committer | Alejandro Gonzalez <alex.gonzalez@digi.com> | 2010-05-25 11:20:25 +0200 |
| commit | a21521b7d66ba85a661f61b9c013cf538c462c9f (patch) | |
| tree | 108d8ad58d88607592cae46a435aa399c5060079 /arch | |
| parent | 6aaf95c4567a38cb4b1d695a2438e28beb4f2be7 (diff) | |
ENGR00122612-1 iMX23 Lower the suspend current to 9mA.
Fix LCDIF suspend issue and improve suspend flow,now
suspend current can low to 9mA with LCD panel.
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Alejandro Gonzalez <alex.gonzalez@digi.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mx23/pm.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/arch/arm/mach-mx23/pm.c b/arch/arm/mach-mx23/pm.c index efd24bce667f..c44a81f94b5e 100644 --- a/arch/arm/mach-mx23/pm.c +++ b/arch/arm/mach-mx23/pm.c @@ -53,7 +53,7 @@ static int saved_sleep_state; #define WAIT_CYCLE(n) for (i = 0; i < n; i++); #define LOWER_VDDIO 10 #define LOWER_VDDA 9 -#define LOWER_VDDD 0xa +#define LOWER_VDDD 8 #define MAX_POWEROFF_CODE_SIZE (6 * 1024) #define REGS_CLKCTRL_BASE IO_ADDRESS(CLKCTRL_PHYS_ADDR) @@ -63,19 +63,24 @@ static void mx23_standby(void) u32 reg_vddd, reg_vdda, reg_vddio; /* DDR EnterSelfrefreshMode */ __raw_writel( - BM_DRAM_CTL08_SREFRESH | __raw_readl(IO_ADDRESS(DRAM_PHYS_ADDR) - + HW_DRAM_CTL08), - IO_ADDRESS(DRAM_PHYS_ADDR) + HW_DRAM_CTL08); + BF_DRAM_CTL16_LOWPOWER_AUTO_ENABLE(0x2) | + __raw_readl(IO_ADDRESS(DRAM_PHYS_ADDR) + + HW_DRAM_CTL16), + IO_ADDRESS(DRAM_PHYS_ADDR) + HW_DRAM_CTL16); + __raw_writel( + BF_DRAM_CTL16_LOWPOWER_CONTROL(0x2) | + __raw_readl(IO_ADDRESS(DRAM_PHYS_ADDR) + + HW_DRAM_CTL16), + IO_ADDRESS(DRAM_PHYS_ADDR) + HW_DRAM_CTL16); /* Gating EMI CLock */ __raw_writel(BM_CLKCTRL_EMI_CLKGATE | __raw_readl(REGS_CLKCTRL_BASE + HW_CLKCTRL_EMI), REGS_CLKCTRL_BASE + HW_CLKCTRL_EMI); -#if 0 + /* Disable PLL */ __raw_writel(BM_CLKCTRL_PLLCTRL0_POWER, REGS_CLKCTRL_BASE + HW_CLKCTRL_PLLCTRL0_CLR); -#endif /* Reduce the VDDIO (3.050 volt) */ reg_vddio = __raw_readl(REGS_POWER_BASE + HW_POWER_VDDIOCTRL); @@ -153,6 +158,10 @@ static void mx23_standby(void) __raw_writel(BM_CLKCTRL_CPU_INTERRUPT_WAIT, REGS_CLKCTRL_BASE + HW_CLKCTRL_CPU_CLR); + /* Enable PLL */ + __raw_writel(BM_CLKCTRL_PLLCTRL0_POWER, + REGS_CLKCTRL_BASE + HW_CLKCTRL_PLLCTRL0_SET); + /* restore the DCDC parameter */ __raw_writel(BM_POWER_MINPWR_EN_DC_PFM, @@ -203,9 +212,6 @@ static void mx23_standby(void) ; - /* Enable PLL */ - __raw_writel(BM_CLKCTRL_PLLCTRL0_POWER, - REGS_CLKCTRL_BASE + HW_CLKCTRL_PLLCTRL0_SET); /* Ungating EMI CLock */ __raw_writel(~BM_CLKCTRL_EMI_CLKGATE & __raw_readl(REGS_CLKCTRL_BASE + HW_CLKCTRL_EMI), @@ -213,10 +219,16 @@ static void mx23_standby(void) /* LeaveSelfrefreshMode */ __raw_writel( - (~BM_DRAM_CTL08_SREFRESH) & - __raw_readl(IO_ADDRESS(DRAM_PHYS_ADDR) - + HW_DRAM_CTL08), - IO_ADDRESS(DRAM_PHYS_ADDR) + HW_DRAM_CTL08); + (~BF_DRAM_CTL16_LOWPOWER_CONTROL(0x2)) & + __raw_readl(IO_ADDRESS(DRAM_PHYS_ADDR) + + HW_DRAM_CTL16), + IO_ADDRESS(DRAM_PHYS_ADDR) + HW_DRAM_CTL16); + + __raw_writel( + (~BF_DRAM_CTL16_LOWPOWER_AUTO_ENABLE(0x2)) & + __raw_readl(IO_ADDRESS(DRAM_PHYS_ADDR) + + HW_DRAM_CTL16), + IO_ADDRESS(DRAM_PHYS_ADDR) + HW_DRAM_CTL16); } static inline void do_standby(void) @@ -279,7 +291,7 @@ static inline void do_standby(void) BM_CLKCTRL_CLKSEQ_BYPASS_SSP | BM_CLKCTRL_CLKSEQ_BYPASS_GPMI | BM_CLKCTRL_CLKSEQ_BYPASS_IR | - BM_CLKCTRL_CLKSEQ_BYPASS_PIX| + BM_CLKCTRL_CLKSEQ_BYPASS_PIX | BM_CLKCTRL_CLKSEQ_BYPASS_SAIF, REGS_CLKCTRL_BASE + HW_CLKCTRL_CLKSEQ_SET); |