@@ -318,7 +318,7 @@ map2 {
&pcie2x1l0 {
pinctrl-names = "default";
- pinctrl-0 = <&pcie2_0_rst>;
+ pinctrl-0 = <&pcie30x1_pins>;
reset-gpios = <&gpio4 RK_PA5 GPIO_ACTIVE_HIGH>;
vpcie3v3-supply = <&vcc3v3_pcie2x1l0>;
status = "okay";
@@ -364,16 +364,24 @@ hp_detect: hp-detect {
};
pcie2 {
- pcie2_0_rst: pcie2-0-rst {
- rockchip,pins = <4 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>;
+ pcie2_2_rst: pcie2-2-rst {
+ rockchip,pins = <3 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;
};
+ };
+ pcie30x1 {
pcie2_0_vcc3v3_en: pcie2-0-vcc-en {
rockchip,pins = <1 RK_PD2 RK_FUNC_GPIO &pcfg_pull_none>;
};
- pcie2_2_rst: pcie2-2-rst {
- rockchip,pins = <3 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;
+ pcie30x1_pins: pcie30x1-pins {
+ rockchip,pins =
+ /* PCIE30x1_0_CLKREQn_M1_L */
+ <4 RK_PA3 RK_FUNC_GPIO &pcfg_pull_down>,
+ /* PCIE30x1_0_PERSTn_M1_L */
+ <4 RK_PA5 RK_FUNC_GPIO &pcfg_pull_down>,
+ /* PCIE30x1_0_WAKEn_M1_L */
+ <4 RK_PA4 RK_FUNC_GPIO &pcfg_pull_down>;
};
};
Add missing pinctrl settings for PCIe 3.0 x1 clock request and wake signals. Each component of PCIe communication have the following control signals: PERST, WAKE, CLKREQ, and REFCLK. These signals work to generate high-speed signals and communicate with other PCIe devices. Used by root complex to endpoint depending on the power state. PERST is referred to as a fundamental reset. PERST should be held low until all the power rails in the system and the reference clock are stable. A transition from low to high in this signal usually indicates the beginning of link initialization. WAKE signal is an active-low signal that is used to return the PCIe interface to an active state when in a low-power state. CLKREQ signal is also an active-low signal and is used to request the reference clock. Rename node from 'pcie2' to 'pcie30x1' to align with schematic nomenclature. Signed-off-by: Anand Moon <linux.amoon@gmail.com> --- v4: rebase on master, used RK_FUNC_GPIO GPIO function instead of PIN number. V3: New patch. --- .../arm64/boot/dts/rockchip/rk3588-rock-5b.dts | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-)