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[arm] Backport DTB support for Rasperry Pi Compute Module 3. 

Signed-off-by: Cyril Brulebois <cyril@debamax.com>
(cherry picked from commit 64801af590540b4494f408b95a31fbe07963784d)
This commit is contained in:
Cyril Brulebois 2019-07-15 22:41:51 +02:00
parent 57f74f6573
commit 10dd2b634c
3 changed files with 191 additions and 0 deletions
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3
debian/changelog vendored
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@ -11,6 +11,9 @@ linux (4.19.67-2) UNRELEASED; urgency=medium
* netfilter: conntrack: Use consistent ct id hash calculation
(fixes regression in 4.19.44)
[ Cyril Brulebois ]
* [arm] Backport DTB support for Rasperry Pi Compute Module 3.
-- Ben Hutchings <ben@decadent.org.uk> Wed, 21 Aug 2019 23:37:56 +0100
linux (4.19.67-1) buster; urgency=medium

185
debian/patches/features/arm/ARM-dts-add-Raspberry-Pi-Compute-Module-3-and-IO-boa.patch vendored Normal file
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@ -0,0 +1,185 @@
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Mon, 27 Aug 2018 19:31:17 +0200
Subject: ARM: dts: add Raspberry Pi Compute Module 3 and IO board
Origin: https://git.kernel.org/linus/a54fe8a6cf66828499b121c3c39c194b43b8ed94
The Raspberry Pi Compute Module 3 (CM3) and the Raspberry Pi
Compute Module 3 Lite (CM3L) are SoMs which contains a BCM2837 processor,
1 GB RAM and a GPIO expander. The CM3 has a 4 GB eMMC, but on the CM3L
the eMMC is unpopulated and it's up to the user to connect their
own SD/MMC device. The dtsi file is designed to work for both modules.
There is also a matching carrier board which is called
Compute Module IO Board V3.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts | 87 +++++++++++++++++++++++++++++++
arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi | 52 ++++++++++++++++++
3 files changed, 140 insertions(+)
create mode 100644 arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
create mode 100644 arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b5bd3de87c33..35c749fe22eb 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -81,6 +81,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
bcm2836-rpi-2-b.dtb \
bcm2837-rpi-3-b.dtb \
bcm2837-rpi-3-b-plus.dtb \
+ bcm2837-rpi-cm3-io3.dtb \
bcm2835-rpi-zero.dtb \
bcm2835-rpi-zero-w.dtb
dtb-$(CONFIG_ARCH_BCM_5301X) += \
diff --git a/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts b/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
new file mode 100644
index 000000000000..6c8233a36d86
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2837-rpi-cm3.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+ compatible = "raspberrypi,3-compute-module", "brcm,bcm2837";
+ model = "Raspberry Pi Compute Module 3 IO board V3.0";
+};
+
+&gpio {
+ /*
+ * This is based on the official GPU firmware DT blob.
+ *
+ * Legend:
+ * "NC" = not connected (no rail from the SoC)
+ * "FOO" = GPIO line named "FOO" on the schematic
+ * "FOO_N" = GPIO line named "FOO" on schematic, active low
+ */
+ gpio-line-names = "GPIO0",
+ "GPIO1",
+ "GPIO2",
+ "GPIO3",
+ "GPIO4",
+ "GPIO5",
+ "GPIO6",
+ "GPIO7",
+ "GPIO8",
+ "GPIO9",
+ "GPIO10",
+ "GPIO11",
+ "GPIO12",
+ "GPIO13",
+ "GPIO14",
+ "GPIO15",
+ "GPIO16",
+ "GPIO17",
+ "GPIO18",
+ "GPIO19",
+ "GPIO20",
+ "GPIO21",
+ "GPIO22",
+ "GPIO23",
+ "GPIO24",
+ "GPIO25",
+ "GPIO26",
+ "GPIO27",
+ "GPIO28",
+ "GPIO29",
+ "GPIO30",
+ "GPIO31",
+ "GPIO32",
+ "GPIO33",
+ "GPIO34",
+ "GPIO35",
+ "GPIO36",
+ "GPIO37",
+ "GPIO38",
+ "GPIO39",
+ "GPIO40",
+ "GPIO41",
+ "GPIO42",
+ "GPIO43",
+ "GPIO44",
+ "GPIO45",
+ "GPIO46",
+ "GPIO47",
+ /* Used by eMMC */
+ "SD_CLK_R",
+ "SD_CMD_R",
+ "SD_DATA0_R",
+ "SD_DATA1_R",
+ "SD_DATA2_R",
+ "SD_DATA3_R";
+
+ pinctrl-0 = <&gpioout &alt0>;
+};
+
+&hdmi {
+ hpd-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_gpio14>;
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
new file mode 100644
index 000000000000..7b7ab6aea988
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2837.dtsi"
+#include "bcm2835-rpi.dtsi"
+
+/ {
+ memory {
+ reg = <0 0x40000000>;
+ };
+
+ reg_3v3: fixed-regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
+ reg_1v8: fixed-regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "1V8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ };
+};
+
+&firmware {
+ expgpio: gpio {
+ compatible = "raspberrypi,firmware-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-line-names = "HDMI_HPD_N",
+ "EMMC_EN_N",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC",
+ "NC";
+ status = "okay";
+ };
+};
+
+&sdhost {
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdhost_gpio48>;
+ bus-width = <4>;
+ vmmc-supply = <&reg_3v3>;
+ vqmmc-supply = <&reg_1v8>;
+ status = "okay";
+};

3
debian/patches/series vendored
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@ -248,5 +248,8 @@ bugfix/arm64/huawei-taishan/0031-RDMA-hns-RDMA-hns-Assign-rq-head-pointer-when-e
bugfix/arm64/huawei-taishan/0032-scsi-hisi_sas-Fix-NULL-pointer-dereference.patch
bugfix/arm64/huawei-taishan/0033-scsi-hisi_sas-fix-calls-to-dma_set_mask_and_coherent.patch
# Backported DTB support for Raspberry Pi Compute Module 3 from 4.20-rc1:
features/arm/ARM-dts-add-Raspberry-Pi-Compute-Module-3-and-IO-boa.patch
# ABI maintenance
debian/abi/powerpc-avoid-abi-change-for-disabling-tm.patch