[PATCH v7 5/5] riscv: dts: spacemit: PCIe and PHY-related updates

Alex Elder
2025-12-18T15:12:48Z

Define PCIe and PHY-related Device Tree nodes for the SpacemiT K1 SoC.

Enable the combo PHY and the two PCIe-only PHYs on the Banana Pi BPI-F3
board. The combo PHY is used for USB on this board, and that will be
enabled when USB 3 support is accepted.

The combo PHY must perform a calibration step to determine configuration
values used by the PCIe-only PHYs. As a result, it must be enabled if
either of the other two PHYs is enabled.

Signed-off-by: Alex Elder <elder@riscstar.com>
---
.../boot/dts/spacemit/k1-bananapi-f3.dts | 36 ++++
arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 33 ++++
arch/riscv/boot/dts/spacemit/k1.dtsi | 176 ++++++++++++++++++
3 files changed, 245 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index 71f48454ba47c..3f10efd925dc8 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -61,6 +61,12 @@ reg_vcc_4v: vcc-4v {
};
};

+&combo_phy {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pcie0_3_cfg>;
+ status = "okay";
+};
+
&emmc {
bus-width = <8>;
mmc-hs400-1_8v;
@@ -272,6 +278,36 @@ dldo7 {
};
};

+&pcie1_phy {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pcie1_3_cfg>;
+ status = "okay";
+};
+
+&pcie1_port {
+ phys = <&pcie1_phy>;
+};
+
+&pcie1 {
+ vpcie3v3-supply = <&pcie_vcc_3v3>;
+ status = "okay";
+};
+
+&pcie2_phy {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pcie2_4_cfg>;
+ status = "okay";
+};
+
+&pcie2_port {
+ phys = <&pcie2_phy>;
+};
+
+&pcie2 {
+ vpcie3v3-supply = <&pcie_vcc_3v3>;
+ status = "okay";
+};
+
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_2_cfg>;
diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
index e922e05ff856d..b13dcb10f4d66 100644
--- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
@@ -530,6 +530,39 @@ uart9-2-pins {
};
};

+ pcie0_3_cfg: pcie0-3-cfg {
+ pcie0-3-pins {
+ pinmux = <K1_PADCONF(54, 3)>, /* PERST# */
+ <K1_PADCONF(55, 3)>, /* WAKE# */
+ <K1_PADCONF(53, 3)>; /* CLKREQ# */
+
+ bias-pull-up = <0>;
+ drive-strength = <21>;
+ };
+ };
+
+ pcie1_3_cfg: pcie1-3-cfg {
+ pcie1-3-pins {
+ pinmux = <K1_PADCONF(59, 4)>, /* PERST# */
+ <K1_PADCONF(60, 4)>, /* WAKE# */
+ <K1_PADCONF(61, 4)>; /* CLKREQ# */
+
+ bias-pull-up = <0>;
+ drive-strength = <21>;
+ };
+ };
+
+ pcie2_4_cfg: pcie2-4-cfg {
+ pcie2-4-pins {
+ pinmux = <K1_PADCONF(62, 4)>, /* PERST# */
+ <K1_PADCONF(112, 3)>, /* WAKE# */
+ <K1_PADCONF(117, 4)>; /* CLKREQ# */
+
+ bias-pull-up = <0>;
+ drive-strength = <21>;
+ };
+ };
+
pwm14_1_cfg: pwm14-1-cfg {
pwm14-1-pins {
pinmux = <K1_PADCONF(44, 4)>;
diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
index 7818ca4979b6a..86d1db14e2ee4 100644
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -4,6 +4,7 @@
*/

#include <dt-bindings/clock/spacemit,k1-syscon.h>
+#include <dt-bindings/phy/phy.h>

/dts-v1/;
/ {
@@ -423,6 +424,52 @@ i2c5: i2c@d4013800 {
status = "disabled";
};

+ combo_phy: phy@c0b10000 {
+ compatible = "spacemit,k1-combo-phy";
+ reg = <0x0 0xc0b10000 0x0 0x1000>;
+ clocks = <&vctcxo_24m>,
+ <&syscon_apmu CLK_PCIE0_DBI>,
+ <&syscon_apmu CLK_PCIE0_MASTER>,
+ <&syscon_apmu CLK_PCIE0_SLAVE>;
+ clock-names = "refclk",
+ "dbi",
+ "mstr",
+ "slv";
+ resets = <&syscon_apmu RESET_PCIE0_GLOBAL>,
+ <&syscon_apmu RESET_PCIE0_DBI>,
+ <&syscon_apmu RESET_PCIE0_MASTER>,
+ <&syscon_apmu RESET_PCIE0_SLAVE>;
+ reset-names = "phy",
+ "dbi",
+ "mstr",
+ "slv";
+ #phy-cells = <1>;
+ spacemit,apmu = <&syscon_apmu>;
+ status = "disabled";
+ };
+
+ pcie1_phy: phy@c0c10000 {
+ compatible = "spacemit,k1-pcie-phy";
+ reg = <0x0 0xc0c10000 0x0 0x1000>;
+ clocks = <&vctcxo_24m>;
+ clock-names = "refclk";
+ resets = <&syscon_apmu RESET_PCIE1_GLOBAL>;
+ reset-names = "phy";
+ #phy-cells = <0>;
+ status = "disabled";
+ };
+
+ pcie2_phy: phy@c0d10000 {
+ compatible = "spacemit,k1-pcie-phy";
+ reg = <0x0 0xc0d10000 0x0 0x1000>;
+ clocks = <&vctcxo_24m>;
+ clock-names = "refclk";
+ resets = <&syscon_apmu RESET_PCIE2_GLOBAL>;
+ reset-names = "phy";
+ #phy-cells = <0>;
+ status = "disabled";
+ };
+
syscon_apbc: system-controller@d4015000 {
compatible = "spacemit,k1-syscon-apbc";
reg = <0x0 0xd4015000 0x0 0x1000>;
@@ -969,6 +1016,135 @@ pcie-bus {
#size-cells = <2>;
dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>,
<0x0 0xb8000000 0x1 0x38000000 0x3 0x48000000>;
+ pcie0: pcie@ca000000 {
+ device_type = "pci";
+ compatible = "spacemit,k1-pcie";
+ reg = <0x0 0xca000000 0x0 0x00001000>,
+ <0x0 0xca300000 0x0 0x0001ff24>,
+ <0x0 0x8f000000 0x0 0x00002000>,
+ <0x0 0xc0b20000 0x0 0x00001000>;
+ reg-names = "dbi",
+ "atu",
+ "config",
+ "link";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x01000000 0x0 0x00000000 0x0 0x8f002000 0x0 0x00100000>,
+ <0x02000000 0x0 0x80000000 0x0 0x80000000 0x0 0x0f000000>;
+ interrupts = <141>;
+ interrupt-names = "msi";
+ clocks = <&syscon_apmu CLK_PCIE0_DBI>,
+ <&syscon_apmu CLK_PCIE0_MASTER>,
+ <&syscon_apmu CLK_PCIE0_SLAVE>;
+ clock-names = "dbi",
+ "mstr",
+ "slv";
+ resets = <&syscon_apmu RESET_PCIE0_DBI>,
+ <&syscon_apmu RESET_PCIE0_MASTER>,
+ <&syscon_apmu RESET_PCIE0_SLAVE>;
+ reset-names = "dbi",
+ "mstr",
+ "slv";
+ spacemit,apmu = <&syscon_apmu 0x03cc>;
+ status = "disabled";
+
+ pcie0_port: pcie@0 {
+ device_type = "pci";
+ compatible = "pciclass,0604";
+ reg = <0x0 0x0 0x0 0x0 0x0>;
+ bus-range = <0x01 0xff>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+ };
+ };
+
+ pcie1: pcie@ca400000 {
+ device_type = "pci";
+ compatible = "spacemit,k1-pcie";
+ reg = <0x0 0xca400000 0x0 0x00001000>,
+ <0x0 0xca700000 0x0 0x0001ff24>,
+ <0x0 0x9f000000 0x0 0x00002000>,
+ <0x0 0xc0c20000 0x0 0x00001000>;
+ reg-names = "dbi",
+ "atu",
+ "config",
+ "link";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x01000000 0x0 0x00000000 0x0 0x9f002000 0x0 0x00100000>,
+ <0x02000000 0x0 0x90000000 0x0 0x90000000 0x0 0x0f000000>;
+ interrupts = <142>;
+ interrupt-names = "msi";
+ clocks = <&syscon_apmu CLK_PCIE1_DBI>,
+ <&syscon_apmu CLK_PCIE1_MASTER>,
+ <&syscon_apmu CLK_PCIE1_SLAVE>;
+ clock-names = "dbi",
+ "mstr",
+ "slv";
+ resets = <&syscon_apmu RESET_PCIE1_DBI>,
+ <&syscon_apmu RESET_PCIE1_MASTER>,
+ <&syscon_apmu RESET_PCIE1_SLAVE>;
+ reset-names = "dbi",
+ "mstr",
+ "slv";
+ spacemit,apmu = <&syscon_apmu 0x3d4>;
+ status = "disabled";
+
+ pcie1_port: pcie@0 {
+ device_type = "pci";
+ compatible = "pciclass,0604";
+ reg = <0x0 0x0 0x0 0x0 0x0>;
+ bus-range = <0x01 0xff>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+ };
+ };
+
+ pcie2: pcie@ca800000 {
+ device_type = "pci";
+ compatible = "spacemit,k1-pcie";
+ reg = <0x0 0xca800000 0x0 0x00001000>,
+ <0x0 0xcab00000 0x0 0x0001ff24>,
+ <0x0 0xb7000000 0x0 0x00002000>,
+ <0x0 0xc0d20000 0x0 0x00001000>;
+ reg-names = "dbi",
+ "atu",
+ "config",
+ "link";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x01000000 0x0 0x00000000 0x0 0xb7002000 0x0 0x00100000>,
+ <0x42000000 0x0 0xa0000000 0x0 0xa0000000 0x0 0x10000000>,
+ <0x02000000 0x0 0xb0000000 0x0 0xb0000000 0x0 0x07000000>;
+ interrupts = <143>;
+ interrupt-names = "msi";
+ clocks = <&syscon_apmu CLK_PCIE2_DBI>,
+ <&syscon_apmu CLK_PCIE2_MASTER>,
+ <&syscon_apmu CLK_PCIE2_SLAVE>;
+ clock-names = "dbi",
+ "mstr",
+ "slv";
+ resets = <&syscon_apmu RESET_PCIE2_DBI>,
+ <&syscon_apmu RESET_PCIE2_MASTER>,
+ <&syscon_apmu RESET_PCIE2_SLAVE>;
+ reset-names = "dbi",
+ "mstr",
+ "slv";
+ spacemit,apmu = <&syscon_apmu 0x3dc>;
+ status = "disabled";
+
+ pcie2_port: pcie@0 {
+ device_type = "pci";
+ compatible = "pciclass,0604";
+ reg = <0x0 0x0 0x0 0x0 0x0>;
+ bus-range = <0x01 0xff>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+ };
+ };
};

storage-bus {
--
2.48.1