arm64: dts: rockchip: Improve nanopi4 PCIe

Expand the power tree description with the 0V9 and 1V8 supplies to the
RK3399 PCIe block. The NanoPis M4 and NEO4 just route 2 lanes to the
user expansion pins, so there's not much more to say at the board level
for them; NanoPC-T4 has a standard M.2 connector so we can at least
claim the 3.3V supply to that too.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/a04a17f4b9b12e8698c76b34e7ca22f0c81845ce.1573908195.git.robin.murphy@arm.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts
index d3ed8e5..e0d7561 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts
@@ -94,6 +94,11 @@
        };
 };
 
+&pcie0 {
+       num-lanes = <4>;
+       vpcie3v3-supply = <&vcc3v3_sys>;
+};
+
 &pinctrl {
        ir {
                ir_rx: ir-rx {

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi4.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-nanopi4.dtsi
index b788ae4..c88018a 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi4.dtsi
@@ -48,7 +48,7 @@
        };
 
        /* switched by pmic_sleep */
-       vcc1v8_s3: vcca1v8_s3: vcc1v8-s3 {
+       vcc1v8_s3: vcc1v8-s3 {
                compatible = "regulator-fixed";
                regulator-always-on;
                regulator-boot-on;
@@ -71,6 +71,27 @@
                vin-supply = <&vcc3v3_sys>;
        };
 
+       /*
+        * Really, this is supplied by vcc_1v8, and vcc1v8_s3 only
+        * drives the enable pin, but we can't quite model that.
+        */
+       vcca0v9_s3: vcca0v9-s3 {
+               compatible = "regulator-fixed";
+               regulator-min-microvolt = <900000>;
+               regulator-max-microvolt = <900000>;
+               regulator-name = "vcca0v9_s3";
+               vin-supply = <&vcc1v8_s3>;
+       };
+
+       /* As above, actually supplied by vcc3v3_sys */
+       vcca1v8_s3: vcca1v8-s3 {
+               compatible = "regulator-fixed";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               regulator-name = "vcca1v8_s3";
+               vin-supply = <&vcc1v8_s3>;
+       };
+
        vbus_typec: vbus-typec {
                compatible = "regulator-fixed";
                regulator-min-microvolt = <5000000>;
@@ -485,7 +506,9 @@
 &pcie0 {
        ep-gpios = <&gpio2 RK_PA4 GPIO_ACTIVE_HIGH>;
        max-link-speed = <2>;
-       num-lanes = <4>;
+       num-lanes = <2>;
+       vpcie0v9-supply = <&vcca0v9_s3>;
+       vpcie1v8-supply = <&vcca1v8_s3>;
        status = "okay";
 };