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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0640-dts-bcm2711-Move-emmc2-to-its-own-bus.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0640-dts-bcm2711-Move-emmc2-to-its-own-bus.patch52
1 files changed, 52 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0640-dts-bcm2711-Move-emmc2-to-its-own-bus.patch b/target/linux/bcm27xx/patches-5.4/950-0640-dts-bcm2711-Move-emmc2-to-its-own-bus.patch
new file mode 100644
index 0000000000..52cf03a382
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0640-dts-bcm2711-Move-emmc2-to-its-own-bus.patch
@@ -0,0 +1,52 @@
+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;