openwrt/target/linux/bcm27xx/patches-5.4/950-0640-dts-bcm2711-Move-emmc2-to-its-own-bus.patch

From f97ba33547711d727fbbcb10eb046f8ac605a966 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Thu, 5 Dec 2019 18:02:08 +0000
Subject: [PATCH] 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>
---
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

--- 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;