Re: [PATCH 6/6] arm64: dts: exynos: add the WiFi/PCIe support to TM2(e) boards

Krzysztof Kozlowski
2020-10-19T10:31:07Z

On Mon, Oct 19, 2020 at 11:47:15AM +0200, Marek Szyprowski wrote:
> From: Jaehoon Chung <jh80.chung@samsung.com>
>
> Add the nodes relevant to PCIe PHY and PCIe support. PCIe is used for the
> WiFi interface (Broadcom Limited BCM4358 802.11ac Wireless LAN SoC).
>
> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
> [mszyprow: rewrote commit message, reworked board/generic dts/dtsi split]
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
> .../boot/dts/exynos/exynos5433-pinctrl.dtsi | 2 +-
> .../dts/exynos/exynos5433-tm2-common.dtsi | 24 ++++++++++++-
> arch/arm64/boot/dts/exynos/exynos5433.dtsi | 36 +++++++++++++++++++
> 3 files changed, 60 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
> index 9df7c65593a1..32a6518517e5 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
> @@ -329,7 +329,7 @@
> };
>
> pcie_bus: pcie_bus {
> - samsung,pins = "gpr3-4", "gpr3-5", "gpr3-6", "gpr3-7";
> + samsung,pins = "gpr3-4", "gpr3-5", "gpr3-6";
> samsung,pin-function = <EXYNOS_PIN_FUNC_3>;
> samsung,pin-pud = <EXYNOS_PIN_PULL_UP>;
> };
> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> index 829fea23d4ab..ef45ef86c48d 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> @@ -969,6 +969,25 @@
> bus-width = <4>;
> };
>
> +&pcie {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pcie_bus &pcie_wlanen>;
> + vdd10-supply = <&ldo6_reg>;
> + vdd18-supply = <&ldo7_reg>;
> + assigned-clocks = <&cmu_fsys CLK_MOUT_SCLK_PCIE_100_USER>,
> + <&cmu_top CLK_MOUT_SCLK_PCIE_100>;
> + assigned-clock-parents = <&cmu_top CLK_SCLK_PCIE_100_FSYS>,
> + <&cmu_top CLK_MOUT_BUS_PLL_USER>;
> + assigned-clock-rates = <0>, <100000000>;
> + interrupt-map-mask = <0 0 0 0>;
> + interrupt-map = <0 0 0 0 &gic GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
> +};
> +
> +&pcie_phy {
> + status = "okay";
> +};
> +
> &ppmu_d0_general {
> status = "okay";
> events {
> @@ -1085,8 +1104,11 @@
> pinctrl-names = "default";
> pinctrl-0 = <&initial_ese>;
>
> + pcie_wlanen: pcie-wlanen {
> + PIN(INPUT, gpj2-0, UP, FAST_SR4);
> + };
> +
> initial_ese: initial-state {
> - PIN(INPUT, gpj2-0, DOWN, FAST_SR1);
> PIN(INPUT, gpj2-1, DOWN, FAST_SR1);
> PIN(INPUT, gpj2-2, DOWN, FAST_SR1);
> };
> diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
> index 8eb4576da8f3..be2d1753d1d1 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
> @@ -1029,6 +1029,11 @@
> reg = <0x145f0000 0x1038>;
> };
>
> + syscon_fsys: syscon@156f0000 {
> + compatible = "syscon";
> + reg = <0x156f0000 0x1044>;
> + };
> +
> gsc_0: video-scaler@13c00000 {
> compatible = "samsung,exynos5433-gsc";
> reg = <0x13c00000 0x1000>;
> @@ -1830,6 +1835,37 @@
> status = "disabled";
> };
> };
> +
> + pcie_phy: pcie-phy@15680000 {
> + compatible = "samsung,exynos5433-pcie-phy";
> + reg = <0x15680000 0x1000>;
> + samsung,pmu-syscon = <&pmu_system_controller>;
> + samsung,fsys-sysreg = <&syscon_fsys>;
> + #phy-cells = <0>;
> + status = "disabled";
> + };
> +
> + pcie: pcie@15700000 {
> + compatible = "samsung,exynos5433-pcie";
> + reg = <0x156b0000 0x1000>, <0x15700000 0x1000>,
> + <0x0c000000 0x1000>;

dtc should complain here:
arch/arm64/boot/dts/exynos/exynos5433.dtsi:1848.23-1868.5: Warning (simple_bus_reg): /soc@0/pcie@15700000: simple-bus unit address format error, expected "156b0000"

> + reg-names = "elbi", "dbi", "config";

This does not match your own bindings:
pcie@15700000: reg-names:1: 'bdi' was expected
pcie@15700000: 'interrupt-names' is a required property

Best regards,
Krzysztof