arm64: dts: rockchip: Fix PCIe regulators on Radxa E25

Despite its name, the regulator vcc3v3_pcie30x1 has nothing to do with
pcie30x1. Instead, it supply power to VBAT1-5 on the M.2 KEY B port as
seen on page 8 of the schematic [1].

pcie30x1 is used for the mini PCIe slot, and as seen on page 9 the
vcc3v3_minipcie regulator is instead related to pcie30x1.

The M.2 KEY B port can be used for WWAN USB2 modules or SATA drives.

Use correct regulator vcc3v3_minipcie for pcie30x1.

[1] https://dl.radxa.com/cm3p/e25/radxa-e25-v1.4-sch.pdf

Fixes: 2bf2f4d9f673 ("arm64: dts: rockchip: Add Radxa CM3I E25")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20230724145213.3833099-1-jonas@kwiboo.se
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-radxa-e25.dts b/arch/arm64/boot/dts/rockchip/rk3568-radxa-e25.dts
index 63c4bd8..f0e4884 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3568-radxa-e25.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-radxa-e25.dts
@@ -47,6 +47,9 @@
                vin-supply = <&vcc5v0_sys>;
        };
 
+       /* actually fed by vcc5v0_sys, dependent
+        * on pi6c clock generator
+        */
        vcc3v3_minipcie: vcc3v3-minipcie-regulator {
                compatible = "regulator-fixed";
                enable-active-high;
@@ -54,9 +57,9 @@
                pinctrl-names = "default";
                pinctrl-0 = <&minipcie_enable_h>;
                regulator-name = "vcc3v3_minipcie";
-               regulator-min-microvolt = <5000000>;
-               regulator-max-microvolt = <5000000>;
-               vin-supply = <&vcc5v0_sys>;
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               vin-supply = <&vcc3v3_pi6c_05>;
        };
 
        vcc3v3_ngff: vcc3v3-ngff-regulator {
@@ -71,9 +74,6 @@
                vin-supply = <&vcc5v0_sys>;
        };
 
-       /* actually fed by vcc5v0_sys, dependent
-        * on pi6c clock generator
-        */
        vcc3v3_pcie30x1: vcc3v3-pcie30x1-regulator {
                compatible = "regulator-fixed";
                enable-active-high;
@@ -83,7 +83,7 @@
                regulator-name = "vcc3v3_pcie30x1";
                regulator-min-microvolt = <3300000>;
                regulator-max-microvolt = <3300000>;
-               vin-supply = <&vcc3v3_pi6c_05>;
+               vin-supply = <&vcc5v0_sys>;
        };
 
        vcc3v3_pi6c_05: vcc3v3-pi6c-05-regulator {
@@ -117,7 +117,7 @@
        pinctrl-names = "default";
        pinctrl-0 = <&pcie30x1m0_pins>;
        reset-gpios = <&gpio0 RK_PC3 GPIO_ACTIVE_HIGH>;
-       vpcie3v3-supply = <&vcc3v3_pcie30x1>;
+       vpcie3v3-supply = <&vcc3v3_minipcie>;
        status = "okay";
 };