dts: bcm2711: Move emmc2 to its own "bus"

Moving the EMMC2 controller under a dedicated bus allows the firmware
to patch the dma-ranges property for different memory sizes without
affecting anything else.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index 9961123..34251ec 100644 (file)
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -193,6 +193,8 @@
 #include "bcm2711-rpi.dtsi"
 #include "bcm283x-rpi-csi1-2lane.dtsi"
 
+/delete-node/ &emmc2;
+
 / {
        chosen {
                bootargs = "coherent_pool=1M 8250.nr_uarts=1";
@@ -212,6 +214,26 @@
                /delete-property/ ethernet;
                /delete-property/ intc;
                pcie0 = &pcie0;
+               emmc2bus = &emmc2bus;
+       };
+
+       emmc2bus: emmc2bus {
+               compatible = "simple-bus";
+               #address-cells = <2>;
+               #size-cells = <1>;
+
+               ranges = <0x0 0x7e000000  0x0 0xfe000000  0x01800000>;
+               dma-ranges = <0x0 0xc0000000  0x0 0x00000000  0x3c000000>;
+
+               emmc2: emmc2@7e340000 {
+                       compatible = "brcm,bcm2711-emmc2";
+                       status = "okay";
+                       interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&clocks BCM2711_CLOCK_EMMC2>;
+                       reg = <0x0 0x7e340000 0x100>;
+                       vqmmc-supply = <&sd_io_1v8_reg>;
+                       broken-cd;
+               };
        };
 
        /delete-node/ wifi-pwrseq;