From 72fd21b62055b985d3e3fb72a1e70e3d09596174 Mon Sep 17 00:00:00 2001 From: Peter Robinson Date: Sun, 27 Sep 2020 18:20:41 +0100 Subject: [PATCH] arm64: tegra: Enable DFLL support on Jetson Nano Populate the DFLL node and corresponding PWM pin nodes in order to enable CPUFREQ support on the Jetson Nano platform. Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding --- .../boot/dts/nvidia/tegra210-p3450-0000.dts | 50 +++++++++++++++---- 1 file changed, 40 insertions(+), 10 deletions(-) diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts b/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts index 9bc52fdb393c..4d980d753a98 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts +++ b/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts @@ -101,6 +101,22 @@ gpu@57000000 { status = "okay"; }; + pinmux@700008d4 { + dvfs_pwm_active_state: dvfs_pwm_active { + dvfs_pwm_pbb1 { + nvidia,pins = "dvfs_pwm_pbb1"; + nvidia,tristate = ; + }; + }; + + dvfs_pwm_inactive_state: dvfs_pwm_inactive { + dvfs_pwm_pbb1 { + nvidia,pins = "dvfs_pwm_pbb1"; + nvidia,tristate = ; + }; + }; + }; + /* debug port */ serial@70006000 { status = "okay"; @@ -574,17 +590,31 @@ sdhci@700b0400 { wakeup-source; }; - clocks { - compatible = "simple-bus"; - #address-cells = <1>; - #size-cells = <0>; + clock@70110000 { + status = "okay"; - clk32k_in: clock@0 { - compatible = "fixed-clock"; - reg = <0>; - #clock-cells = <0>; - clock-frequency = <32768>; - }; + nvidia,cf = <6>; + nvidia,ci = <0>; + nvidia,cg = <2>; + nvidia,droop-ctrl = <0x00000f00>; + nvidia,force-mode = <1>; + nvidia,sample-rate = <25000>; + + nvidia,pwm-min-microvolts = <708000>; + nvidia,pwm-period-nanoseconds = <2500>; /* 2.5us */ + nvidia,pwm-to-pmic; + nvidia,pwm-tristate-microvolts = <1000000>; + nvidia,pwm-voltage-step-microvolts = <19200>; + + pinctrl-names = "dvfs_pwm_enable", "dvfs_pwm_disable"; + pinctrl-0 = <&dvfs_pwm_active_state>; + pinctrl-1 = <&dvfs_pwm_inactive_state>; + }; + + clk32k_in: clock@0 { + compatible = "fixed-clock"; + clock-frequency = <32768>; + #clock-cells = <0>; }; cpus { -- 2.26.2