This adds a SPI controller to the Microchip Sparx5 SoC, as well as the
mmio-mux that is required to select the right SPI interface for a
given SPI device.
Signed-off-by: Lars Povlsen <lars.povlsen@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/microchip/sparx5.dtsi | 27 ++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/microchip/sparx5.dtsi b/arch/arm64/boot/dts/microchip/sparx5.dtsi
index c9dbd1a8b22b..89ac1a710216 100644
--- a/arch/arm64/boot/dts/microchip/sparx5.dtsi
+++ b/arch/arm64/boot/dts/microchip/sparx5.dtsi
@@ -14,6 +14,7 @@ / {
#size-cells = <1>;
aliases {
+ spi0 = &spi0;
serial0 = &uart0;
serial1 = &uart1;
};
@@ -119,8 +120,19 @@ gic: interrupt-controller@600300000 {
};
cpu_ctrl: syscon@600000000 {
- compatible = "microchip,sparx5-cpu-syscon", "syscon";
+ compatible = "microchip,sparx5-cpu-syscon", "syscon",
+ "simple-mfd";
reg = <0x6 0x00000000 0xd0>;
+ mux: mux-controller {
+ compatible = "mmio-mux";
+ #mux-control-cells = <0>;
+ /*
+ * SI_OWNER and SI2_OWNER in GENERAL_CTRL
+ * SPI: value 9 - (SIMC,SIBM) = 0b1001
+ * SPI2: value 6 - (SIBM,SIMC) = 0b0110
+ */
+ mux-reg-masks = <0x88 0xf0>;
+ };
};
reset@611010008 {
@@ -155,6 +167,19 @@ uart1: serial@600102000 {
status = "disabled";
};
+ spi0: spi@600104000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "microchip,sparx5-spi";
+ reg = <0x6 0x00104000 0x40>;
+ num-cs = <16>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ clocks = <&ahb_clk>;
+ interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
+
timer1: timer@600105000 {
compatible = "snps,dw-apb-timer";
reg = <0x6 0x00105000 0x1000>;
--
2.27.0
