ARM: dts: bcm2835: Add Raspberry Pi Zero W

The Raspberry Pi Zero W has the same components like the Zero plus
a Cypress CYW43438 wireless chip (wifi + bl).

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 4b17f35dc9a7167bcce9b5c9c9b35b7375add15c..6e632a341363931d09edd7a2175039d2bd65982e 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -73,7 +73,8 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
        bcm2835-rpi-a-plus.dtb \
        bcm2836-rpi-2-b.dtb \
        bcm2837-rpi-3-b.dtb \
-       bcm2835-rpi-zero.dtb
+       bcm2835-rpi-zero.dtb \
+       bcm2835-rpi-zero-w.dtb
 dtb-$(CONFIG_ARCH_BCM_5301X) += \
        bcm4708-asus-rt-ac56u.dtb \
        bcm4708-asus-rt-ac68u.dtb \

diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
new file mode 100644 (file)
index 0000000..82651c3
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2017 Stefan Wahren <stefan.wahren@i2se.com>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+#include "bcm2835.dtsi"
+#include "bcm2835-rpi.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+       compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
+       model = "Raspberry Pi Zero W";
+
+       /* Needed by firmware to properly init UARTs */
+       aliases {
+               uart0 = "/soc/serial@7e201000";
+               uart1 = "/soc/serial@7e215040";
+               serial0 = "/soc/serial@7e201000";
+               serial1 = "/soc/serial@7e215040";
+       };
+
+       leds {
+               act {
+                       gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
+               };
+       };
+
+       wifi_pwrseq: wifi-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               pinctrl-names = "default";
+               pinctrl-0 = <&wl_on>;
+               reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
+       };
+};
+
+&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",
+                         "SDA1",
+                         "SCL1",
+                         "GPIO_GCLK",
+                         "GPIO5",
+                         "GPIO6",
+                         "SPI_CE1_N",
+                         "SPI_CE0_N",
+                         "SPI_MISO",
+                         "SPI_MOSI",
+                         "SPI_SCLK",
+                         "GPIO12",
+                         "GPIO13",
+                         /* Serial port */
+                         "TXD0",
+                         "RXD0",
+                         "GPIO16",
+                         "GPIO17",
+                         "GPIO18",
+                         "GPIO19",
+                         "GPIO20",
+                         "GPIO21",
+                         "GPIO22",
+                         "GPIO23",
+                         "GPIO24",
+                         "GPIO25",
+                         "GPIO26",
+                         "GPIO27",
+                         "SDA0",
+                         "SCL0",
+                         "NC", /* GPIO30 */
+                         "NC", /* GPIO31 */
+                         "NC", /* GPIO32 */
+                         "NC", /* GPIO33 */
+                         "NC", /* GPIO34 */
+                         "NC", /* GPIO35 */
+                         "NC", /* GPIO36 */
+                         "NC", /* GPIO37 */
+                         "NC", /* GPIO38 */
+                         "NC", /* GPIO39 */
+                         "CAM_GPIO1", /* GPIO40 */
+                         "WL_ON", /* GPIO41 */
+                         "NC", /* GPIO42 */
+                         "WIFI_CLK", /* GPIO43 */
+                         "CAM_GPIO0", /* GPIO44 */
+                         "BT_ON", /* GPIO45 */
+                         "HDMI_HPD_N",
+                         "STATUS_LED_N",
+                         /* Used by SD Card */
+                         "SD_CLK_R",
+                         "SD_CMD_R",
+                         "SD_DATA0_R",
+                         "SD_DATA1_R",
+                         "SD_DATA2_R",
+                         "SD_DATA3_R";
+
+       pinctrl-0 = <&gpioout &alt0>;
+
+       wl_on: wl-on {
+               brcm,pins = <41>;
+               brcm,function = <BCM2835_FSEL_GPIO_OUT>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
+&sdhci {
+       #address-cells = <1>;
+       #size-cells = <0>;
+       pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+       non-removable;
+       status = "okay";
+
+       brcmf: wifi@1 {
+               reg = <1>;
+               compatible = "brcm,bcm4329-fmac";
+       };
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_gpio14>;
+       status = "okay";
+};