diff options
| author | Anson Huang <Anson.Huang@nxp.com> | 2018-06-22 08:32:48 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2018-07-03 10:13:44 +0300 |
| commit | d082852f40de5cf55a7a689bf582fced39f5443e (patch) | |
| tree | 1f9496f4ccc1a39966f1fb29b0f2dc11bb90f01b | |
| parent | 83ef5da0527cfeb1bb77c25f67b7ce0e06a42579 (diff) | |
| download | linux-d082852f40de5cf55a7a689bf582fced39f5443e.tar.xz | |
ARM: imx: enable bus auto clock gating function for i.mx6sll
i.MX6SLL has HW bus auto clock gating function, enable
it by default to save VDD_SOC_IN power, about 5% ~ 20%
saved depends on different use cases.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| -rw-r--r-- | arch/arm/mach-imx/pm-imx6.c | 11 | ||||
| -rw-r--r-- | include/linux/mfd/syscon/imx6q-iomuxc-gpr.h | 3 |
2 files changed, 12 insertions, 2 deletions
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index 791e1fda248e..b08e407d8d96 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -648,10 +648,17 @@ void __init imx6dl_pm_init(void) void __init imx6sl_pm_init(void) { - if (cpu_is_imx6sl()) + struct regmap *gpr; + + if (cpu_is_imx6sl()) { imx6_pm_common_init(&imx6sl_pm_data); - else + } else { imx6_pm_common_init(&imx6sll_pm_data); + gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr"); + if (!IS_ERR(gpr)) + regmap_update_bits(gpr, IOMUXC_GPR5, + IMX6SLL_GPR5_AFCG_X_BYPASS_MASK, 0); + } } void __init imx6sx_pm_init(void) diff --git a/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h b/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h index e06f5f79eaef..6c1ad160ed87 100644 --- a/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h +++ b/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h @@ -457,4 +457,7 @@ #define MCLK_DIR(x) (x == 1 ? IMX6UL_GPR1_SAI1_MCLK_DIR : x == 2 ? \ IMX6UL_GPR1_SAI2_MCLK_DIR : IMX6UL_GPR1_SAI3_MCLK_DIR) +/* For imx6sll iomux gpr register field define */ +#define IMX6SLL_GPR5_AFCG_X_BYPASS_MASK (0x1f << 11) + #endif /* __LINUX_IMX6Q_IOMUXC_GPR_H */ |