diff options
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.patch | 52 |
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; |