From: Heiko Stuebner <heiko.stuebner@...>
Date: Tue, 14 Nov 2023 16:27:22 +0100
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@...>
Reviewed-by: Quentin Schulz <quentin.schulz@...>
changes in v4:
- fix the reported frequency of the clk generator (Jonas)
changes in v3:
- drop unnecessary pinctrl comment (Quentin)
- add Quentin's review
changes in v2:
- "an" M.2 slot (Dragan)
- pinctrl for refclk-en and reset pin (Quentin)
- don't repurpose the pcie30x4_pins pinctrl entry for only wake (Quentin)
.../arm64/boot/dts/rockchip/rk3588-jaguar.dts | 59 +++++++++++++++++++
1 file changed, 59 insertions(+)
@@ -72,6 +72,27 @@ led-1 {
};
};
+ /*
+ * 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>;
@@ -358,6 +379,30 @@ &pcie2x1l0 {
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 {
@@ -376,6 +421,20 @@ led1_pin: led1-pin {
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 {