Hi,
On Thu, May 30, 2019 at 12:58:37PM +0000, Anand Moon wrote:
> This patch add missing PCIe gpio and pinctrl for power (#PCIE_PWR)
> also add PCIe gpio and pinctrl for reset (#PCIE_PERST_L).
>
> Signed-off-by: Anand Moon <linux.am...@gmail.com>
> ---
> Tested on Rock960 Model A
> ---
> arch/arm64/boot/dts/rockchip/rk3399-rock960.dtsi | 16 ++++++++++++++--
> 1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock960.dtsi
> b/arch/arm64/boot/dts/rockchip/rk3399-rock960.dtsi
> index c7d48d41e184..f5bef6b0fe89 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399-rock960.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock960.dtsi
> @@ -55,9 +55,10 @@
>
> vcc3v3_pcie: vcc3v3-pcie-regulator {
> compatible = "regulator-fixed";
> + gpio = <&gpio2 RK_PA2 GPIO_ACTIVE_HIGH>;
> enable-active-high;
> pinctrl-names = "default";
> - pinctrl-0 = <&pcie_drv>;
> + pinctrl-0 = <&pcie_drv &pcie_pwr>;
> regulator-boot-on;
> regulator-name = "vcc3v3_pcie";
> regulator-min-microvolt = <3300000>;
> @@ -381,9 +382,10 @@
> };
>
> &pcie0 {
> + ep-gpio = <&gpio2 RK_PD4 GPIO_ACTIVE_HIGH>;
> num-lanes = <4>;
> pinctrl-names = "default";
> - pinctrl-0 = <&pcie_clkreqn_cpm>;
> + pinctrl-0 = <&pcie_clkreqn_cpm &pcie_perst_l>;
> vpcie3v3-supply = <&vcc3v3_pcie>;
> status = "okay";
> };
> @@ -408,6 +410,16 @@
> };
> };
>
> + pcie {
> + pcie_pwr: pcie-pwr {
> + rockchip,pins = <2 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;
> + };
> +
> + pcie_perst_l:pcie-perst-l {
> + rockchip,pins = <2 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
> + };
Which schematics did you refer? According to Rock960 v2.1 schematics [1], below
is the pin mapping for PCI-E PWR and PERST:
PCIE_PERST - GPIO2_A2
PCIE_PWR - GPIO2_A5
Above mapping holds true for Rock960 version 1.1, 1.2 and 1.3. Also,
rk3399-rock960.dtsi is common for both Rock960 and Ficus boards, so the board
specific parts should go to rk3399-rock960.dts and rk3399-ficus.dts.
Thanks,
Mani
[1] https://dl.vamrs.com/products/rock960/docs/hw/rock960_sch_v12_20180314.pdf
> + };
> +
> sdmmc {
> sdmmc_bus1: sdmmc-bus1 {
> rockchip,pins =
> --
> 2.21.0
>
