diff options
| author | Anson Huang <Anson.Huang@nxp.com> | 2016-10-13 18:26:30 +0800 |
|---|---|---|
| committer | Anson Huang <Anson.Huang@nxp.com> | 2017-06-08 19:25:12 +0800 |
| commit | 4faaeb840118f37afc280141c3ee8ed6eadcbad0 (patch) | |
| tree | 154bcddff1a19f7fcbe1e8f009698e85f0b18070 | |
| parent | 45bb04facc31572cfbc65b651c649dc3c12264d2 (diff) | |
MLK-13333-3 ARM: imx: enable bus clock auto gating for i.mx6sll
i.MX6SLL has new hardware function of bus auto clock gating,
whenerve bus is idle, its clock will be auto gated to save
power, enable this function.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
| -rw-r--r-- | arch/arm/mach-imx/pm-imx6.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index 3217b17937cc..1723651aa4c6 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -91,6 +91,8 @@ #define UART_UBRC 0xac #define UART_UTS 0xb4 +#define IOMUXC_GPR5_CLOCK_AFCG_X_BYPASS_MASK 0xf800 + extern unsigned long iram_tlb_base_addr; extern unsigned long iram_tlb_phys_addr; @@ -1266,6 +1268,7 @@ void __init imx6dl_pm_init(void) void __init imx6sl_pm_init(void) { struct device_node *np; + struct regmap *gpr; if (cpu_is_imx6sll()) { imx6_pm_common_init(&imx6sll_pm_data); @@ -1273,6 +1276,11 @@ void __init imx6sl_pm_init(void) "/soc/aips-bus@02000000/spba-bus@02000000/serial@02020000"); if (np) console_base = of_iomap(np, 0); + /* i.MX6SLL has bus auto clock gating function */ + gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr"); + if (!IS_ERR(gpr)) + regmap_update_bits(gpr, IOMUXC_GPR5, + IOMUXC_GPR5_CLOCK_AFCG_X_BYPASS_MASK, 0); return; } |