arm64: dts: rockchip: add PCIe3 support on rk3588-jaguar
The Jaguar SBC provides an M.2 slot connected to the pcie3 controller.
In contrast to a number of other boards the pcie-refclk is gpio-controlled,
so the necessary clock and is added to the list of pcie3 clocks.
Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Reviewed-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://lore.kernel.org/r/20240423074956.2622318-1-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[ upstream commit: 0ec7e1096332bc2b9bc881c21cfd234058f747b3 ]
(cherry picked from commit 76a89655ae740dddb57187b5b52071ed99187452)
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/dts/upstream/src/arm64/rockchip/rk3588-jaguar.dts b/dts/upstream/src/arm64/rockchip/rk3588-jaguar.dts
index 7d7303f..678ed8b 100644
--- a/dts/upstream/src/arm64/rockchip/rk3588-jaguar.dts
+++ b/dts/upstream/src/arm64/rockchip/rk3588-jaguar.dts
@@ -72,6 +72,27 @@
};
};
+ /*
+ * 100MHz reference clock for PCIe peripherals from PI6C557-05BLE
+ * clock generator.
+ * The clock output is gated via the OE pin on the clock generator.
+ * This is modeled as a fixed-clock plus a gpio-gate-clock.
+ */
+ pcie_refclk_gen: pcie-refclk-gen-clock {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <100000000>;
+ };
+
+ pcie_refclk: pcie-refclk-clock {
+ compatible = "gpio-gate-clock";
+ clocks = <&pcie_refclk_gen>;
+ #clock-cells = <0>;
+ enable-gpios = <&gpio0 RK_PC6 GPIO_ACTIVE_LOW>; /* PCIE30X4_CLKREQN_M0 */
+ pinctrl-names = "default";
+ pinctrl-0 = <&pcie30x4_clkreqn_m0>;
+ };
+
pps {
compatible = "pps-gpio";
gpios = <&gpio0 RK_PD5 GPIO_ACTIVE_HIGH>;
@@ -353,6 +374,30 @@
status = "okay";
};
+&pcie30phy {
+ status = "okay";
+};
+
+&pcie3x4 {
+ /*
+ * The board has a gpio-controlled "pcie_refclk" generator,
+ * so add it to the list of clocks.
+ */
+ clocks = <&cru ACLK_PCIE_4L_MSTR>, <&cru ACLK_PCIE_4L_SLV>,
+ <&cru ACLK_PCIE_4L_DBI>, <&cru PCLK_PCIE_4L>,
+ <&cru CLK_PCIE_AUX0>, <&cru CLK_PCIE4L_PIPE>,
+ <&pcie_refclk>;
+ clock-names = "aclk_mst", "aclk_slv",
+ "aclk_dbi", "pclk",
+ "aux", "pipe",
+ "ref";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pcie30x4_waken_m0 &pcie30x4_perstn_m0>;
+ reset-gpios = <&gpio0 RK_PD0 GPIO_ACTIVE_HIGH>; /* PCIE30X4_PERSTN_M0 */
+ vpcie3v3-supply = <&vcc3v3_mdot2>;
+ status = "okay";
+};
+
&pinctrl {
emmc {
emmc_reset: emmc-reset {
@@ -371,6 +416,20 @@
rockchip,pins = <1 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
+
+ pcie30x4 {
+ pcie30x4_clkreqn_m0: pcie30x4-clkreqn-m0 {
+ rockchip,pins = <0 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+
+ pcie30x4_perstn_m0: pcie30x4-perstn-m0 {
+ rockchip,pins = <0 RK_PD0 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+
+ pcie30x4_waken_m0: pcie30x4-waken-m0 {
+ rockchip,pins = <0 RK_PC7 12 &pcfg_pull_none>;
+ };
+ };
};
&saradc {