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authorShawn Guo <shawn.guo@linaro.org>2013-10-17 10:07:09 +0800
committerShawn Guo <shawn.guo@linaro.org>2013-10-21 09:39:27 +0800
commit9ba64fe3eb461b95bf11436a13db0d9c79465514 (patch)
tree4ab4a7ee8c41bc2116b31799fb35f04c09411a53
parentd48866fefdac239a4e02777e712aad60db9ee8a8 (diff)
ARM: imx: enable suspend for imx6sl
The imx6sl low power mode implementation inherits imx6q/dl one, and pm-imx6q.c can just work for imx6sl with some minor updates. Let's enable imx6sl suspend support by reusing pm-imx6q.c and use cpu_is_imxXX() to handle the those minor differences between imx6sl and imx6q/dl. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
-rw-r--r--arch/arm/mach-imx/Makefile2
-rw-r--r--arch/arm/mach-imx/clk-imx6sl.c3
-rw-r--r--arch/arm/mach-imx/mach-imx6sl.c3
-rw-r--r--arch/arm/mach-imx/mxc.h5
-rw-r--r--arch/arm/mach-imx/pm-imx6q.c9
5 files changed, 21 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 5383c589ad71..bbe1f5bb799c 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -102,6 +102,8 @@ obj-$(CONFIG_SOC_IMX6SL) += clk-imx6sl.o mach-imx6sl.o
ifeq ($(CONFIG_PM),y)
obj-$(CONFIG_SOC_IMX6Q) += pm-imx6q.o headsmp.o
+# i.MX6SL reuses pm-imx6q.c
+obj-$(CONFIG_SOC_IMX6SL) += pm-imx6q.o
endif
# i.MX5 based machines
diff --git a/arch/arm/mach-imx/clk-imx6sl.c b/arch/arm/mach-imx/clk-imx6sl.c
index a5c3c5d21aee..c0c4ef55e35b 100644
--- a/arch/arm/mach-imx/clk-imx6sl.c
+++ b/arch/arm/mach-imx/clk-imx6sl.c
@@ -127,6 +127,9 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node)
base = of_iomap(np, 0);
WARN_ON(!base);
+ /* Reuse imx6q pm code */
+ imx6q_pm_set_ccm_base(base);
+
/* name reg shift width parent_names num_parents */
clks[IMX6SL_CLK_STEP] = imx_clk_mux("step", base + 0xc, 8, 1, step_sels, ARRAY_SIZE(step_sels));
clks[IMX6SL_CLK_PLL1_SW] = imx_clk_mux("pll1_sw", base + 0xc, 2, 1, pll1_sw_sels, ARRAY_SIZE(pll1_sw_sels));
diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c
index f01aaabd3254..2f952e3fcf89 100644
--- a/arch/arm/mach-imx/mach-imx6sl.c
+++ b/arch/arm/mach-imx/mach-imx6sl.c
@@ -47,6 +47,9 @@ static void __init imx6sl_init_machine(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
imx6sl_fec_init();
+ imx_anatop_init();
+ /* Reuse imx6q pm code */
+ imx6q_pm_init();
}
static void __init imx6sl_init_irq(void)
diff --git a/arch/arm/mach-imx/mxc.h b/arch/arm/mach-imx/mxc.h
index 99e03ea9bf79..b08ab3ad4a6d 100644
--- a/arch/arm/mach-imx/mxc.h
+++ b/arch/arm/mach-imx/mxc.h
@@ -153,6 +153,11 @@ extern unsigned int __mxc_cpu_type;
#endif
#ifndef __ASSEMBLY__
+static inline bool cpu_is_imx6sl(void)
+{
+ return __mxc_cpu_type == MXC_CPU_IMX6SL;
+}
+
static inline bool cpu_is_imx6dl(void)
{
return __mxc_cpu_type == MXC_CPU_IMX6DL;
diff --git a/arch/arm/mach-imx/pm-imx6q.c b/arch/arm/mach-imx/pm-imx6q.c
index f303b56f087c..aecd9f8037e0 100644
--- a/arch/arm/mach-imx/pm-imx6q.c
+++ b/arch/arm/mach-imx/pm-imx6q.c
@@ -144,6 +144,12 @@ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
val |= 0x3 << BP_CLPCR_STBY_COUNT;
val |= BM_CLPCR_VSTBY;
val |= BM_CLPCR_SBYOS;
+ if (cpu_is_imx6sl()) {
+ val |= BM_CLPCR_BYPASS_PMIC_READY;
+ val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS;
+ } else {
+ val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
+ }
break;
default:
return -EINVAL;
@@ -181,7 +187,8 @@ static int imx6q_pm_enter(suspend_state_t state)
imx_set_cpu_jump(0, v7_cpu_resume);
/* Zzz ... */
cpu_suspend(0, imx6q_suspend_finish);
- imx_smp_prepare();
+ if (cpu_is_imx6q() || cpu_is_imx6dl())
+ imx_smp_prepare();
imx_anatop_post_resume();
imx_gpc_post_resume();
imx6q_enable_rbc(false);