The vdd_log power supply is controlled by a PWM pin, not by i2c register access. There is a boot message that reports an error about not being able to bring that supply up. Also, the eMMC is not detected and /dev/mmcblk2 does not exist. References: [1] Schematic page 16, search for LOG_DVS_PWM https://dl.vamrs.com/products/sapphire_excavator/RK_SAPPHIRE_SOCBOARD_RK3399_LPDDR3D178P232SD8_V12_20161109HXS.pdf (alternate link) http://opensource.rock-chips.com/images/f/f0/RK_Sapphire_RK3399.rar [2] arch/arm64/boot/dts/rockchip/rk3399-firefly.dts Signed-off-by: Vicente Bergas <vicencb at gmail.com> --- arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi index 0f873c897d0d..46c95ccfd5cb 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi @@ -143,6 +143,17 @@ regulator-always-on; vin-supply = <&vcc_sys>; }; + + vdd_log: vdd-log { + compatible = "pwm-regulator"; + pwms = <&pwm2 0 25000 1>; + regulator-name = "vdd_log"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1400000>; + vin-supply = <&vcc_sys>; + }; }; &cpu_l0 { @@ -421,17 +432,6 @@ regulator-off-in-suspend; }; }; - - vdd_log: vdd-log { - compatible = "pwm-regulator"; - pwms = <&pwm2 0 25000 1>; - regulator-name = "vdd_log"; - regulator-always-on; - regulator-boot-on; - regulator-min-microvolt = <800000>; - regulator-max-microvolt = <1400000>; - vin-supply = <&vcc_sys>; - }; }; &i2c3 { -- 2.16.1
