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arm64: dts: rockchip: add PCIe3 support on rk3588-jaguar

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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>
This commit is contained in:
Heiko Stuebner 2024-04-23 09:49:56 +02:00 committed by Heiko Stuebner
parent 5adbad5c46
commit 0ec7e10963
1 changed files with 59 additions and 0 deletions
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59
arch/arm64/boot/dts/rockchip/rk3588-jaguar.dts
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@ -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>;
@ -358,6 +379,30 @@
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 {
@ -376,6 +421,20 @@
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 {