[PATCH 5/9] ARM: dts: bcm283x-rpi: Move Wifi/BT into separate dtsi
Stefan Wahren
stefan.wahren at i2se.com
Sun Aug 1 05:28:48 PDT 2021
A Wifi/BT chip is quite common for the Raspberry Pi boards. So move those
definitions into a separate dtsi in order to avoid copy & paste. This
change was inspired by a vendor tree patch from Phil Elwell.
Signed-off-by: Stefan Wahren <stefan.wahren at i2se.com>
---
arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 38 +++++++-----------------------
arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 31 +++++++-----------------
arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts | 36 ++++++----------------------
arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 36 +++++++---------------------
arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 36 +++++++---------------------
arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi | 34 ++++++++++++++++++++++++++
6 files changed, 74 insertions(+), 137 deletions(-)
create mode 100644 arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi
diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index abf8298..c54ba5cf 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -3,6 +3,7 @@
#include "bcm2711.dtsi"
#include "bcm2711-rpi.dtsi"
#include "bcm283x-rpi-usb-peripheral.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
/ {
compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
@@ -26,11 +27,6 @@
};
};
- wifi_pwrseq: wifi-pwrseq {
- compatible = "mmc-pwrseq-simple";
- reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
- };
-
sd_io_1v8_reg: sd_io_1v8_reg {
compatible = "regulator-gpio";
regulator-name = "vdd-sd-io";
@@ -56,6 +52,10 @@
};
};
+&bt {
+ shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
+};
+
&ddc0 {
status = "okay";
};
@@ -178,23 +178,6 @@
status = "okay";
};
-/* SDHCI is used to control the SDIO for wireless */
-&sdhci {
- #address-cells = <1>;
- #size-cells = <0>;
- pinctrl-names = "default";
- pinctrl-0 = <&emmc_gpio34>;
- bus-width = <4>;
- non-removable;
- mmc-pwrseq = <&wifi_pwrseq>;
- status = "okay";
-
- brcmf: wifi at 1 {
- reg = <1>;
- compatible = "brcm,bcm4329-fmac";
- };
-};
-
/* EMMC2 is used to drive the SD card */
&emmc2 {
vqmmc-supply = <&sd_io_1v8_reg>;
@@ -236,13 +219,6 @@
pinctrl-names = "default";
pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
uart-has-rtscts;
- status = "okay";
-
- bluetooth {
- compatible = "brcm,bcm43438-bt";
- max-speed = <2000000>;
- shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
- };
};
/* uart1 is mapped to the pin header */
@@ -259,3 +235,7 @@
&vec {
status = "disabled";
};
+
+&wifi_pwrseq {
+ reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
index 33b2b77..243236b 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
@@ -7,6 +7,7 @@
#include "bcm2835.dtsi"
#include "bcm2835-rpi.dtsi"
#include "bcm283x-rpi-usb-otg.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
/ {
compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
@@ -27,11 +28,10 @@
gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
};
};
+};
- wifi_pwrseq: wifi-pwrseq {
- compatible = "mmc-pwrseq-simple";
- reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
- };
+&bt {
+ shutdown-gpios = <&gpio 45 GPIO_ACTIVE_HIGH>;
};
&gpio {
@@ -110,19 +110,7 @@
};
&sdhci {
- #address-cells = <1>;
- #size-cells = <0>;
- pinctrl-names = "default";
pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
- bus-width = <4>;
- mmc-pwrseq = <&wifi_pwrseq>;
- non-removable;
- status = "okay";
-
- brcmf: wifi at 1 {
- reg = <1>;
- compatible = "brcm,bcm4329-fmac";
- };
};
&sdhost {
@@ -135,13 +123,6 @@
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio32 &uart0_ctsrts_gpio30>;
- status = "okay";
-
- bluetooth {
- compatible = "brcm,bcm43438-bt";
- max-speed = <2000000>;
- shutdown-gpios = <&gpio 45 GPIO_ACTIVE_HIGH>;
- };
};
&uart1 {
@@ -149,3 +130,7 @@
pinctrl-0 = <&uart1_gpio14>;
status = "okay";
};
+
+&wifi_pwrseq {
+ reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
index 77099a7..d73daf5 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
@@ -3,6 +3,7 @@
#include "bcm2837.dtsi"
#include "bcm2836-rpi.dtsi"
#include "bcm283x-rpi-usb-host.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
/ {
compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
@@ -130,28 +131,6 @@
status = "okay";
};
-/*
- * SDHCI is used to control the SDIO for wireless
- *
- * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
- * by a single GPIO. We can't give GPIO control to one of the drivers,
- * otherwise the other part would get unexpectedly disturbed.
- */
-&sdhci {
- #address-cells = <1>;
- #size-cells = <0>;
- pinctrl-names = "default";
- pinctrl-0 = <&emmc_gpio34>;
- status = "okay";
- bus-width = <4>;
- non-removable;
-
- brcmf: wifi at 1 {
- reg = <1>;
- compatible = "brcm,bcm4329-fmac";
- };
-};
-
/* SDHOST is used to drive the SD card */
&sdhost {
pinctrl-names = "default";
@@ -160,16 +139,15 @@
bus-width = <4>;
};
-/* uart0 communicates with the BT module */
+/* uart0 communicates with the BT module
+ *
+ * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
+ * by a single GPIO. We can't give GPIO control to one of the drivers,
+ * otherwise the other part would get unexpectedly disturbed.
+ */
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
- status = "okay";
-
- bluetooth {
- compatible = "brcm,bcm43438-bt";
- max-speed = <2000000>;
- };
};
/* uart1 is mapped to the pin header */
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
index 6101026..e12938b 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
@@ -4,6 +4,7 @@
#include "bcm2836-rpi.dtsi"
#include "bcm283x-rpi-lan7515.dtsi"
#include "bcm283x-rpi-usb-host.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
/ {
compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
@@ -31,11 +32,10 @@
linux,default-trigger = "default-on";
};
};
+};
- wifi_pwrseq: wifi-pwrseq {
- compatible = "mmc-pwrseq-simple";
- reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
- };
+&bt {
+ shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
};
&firmware {
@@ -137,23 +137,6 @@
status = "okay";
};
-/* SDHCI is used to control the SDIO for wireless */
-&sdhci {
- #address-cells = <1>;
- #size-cells = <0>;
- pinctrl-names = "default";
- pinctrl-0 = <&emmc_gpio34>;
- status = "okay";
- bus-width = <4>;
- non-removable;
- mmc-pwrseq = <&wifi_pwrseq>;
-
- brcmf: wifi at 1 {
- reg = <1>;
- compatible = "brcm,bcm4329-fmac";
- };
-};
-
/* SDHOST is used to drive the SD card */
&sdhost {
pinctrl-names = "default";
@@ -166,13 +149,6 @@
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
- status = "okay";
-
- bluetooth {
- compatible = "brcm,bcm43438-bt";
- max-speed = <2000000>;
- shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
- };
};
/* uart1 is mapped to the pin header */
@@ -181,3 +157,7 @@
pinctrl-0 = <&uart1_gpio14>;
status = "okay";
};
+
+&wifi_pwrseq {
+ reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
index dd4a486..42b5383 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
@@ -4,6 +4,7 @@
#include "bcm2836-rpi.dtsi"
#include "bcm283x-rpi-smsc9514.dtsi"
#include "bcm283x-rpi-usb-host.dtsi"
+#include "bcm283x-rpi-wifi-bt.dtsi"
/ {
compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
@@ -24,11 +25,10 @@
gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
};
};
+};
- wifi_pwrseq: wifi-pwrseq {
- compatible = "mmc-pwrseq-simple";
- reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
- };
+&bt {
+ shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
};
&firmware {
@@ -134,13 +134,6 @@
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
- status = "okay";
-
- bluetooth {
- compatible = "brcm,bcm43438-bt";
- max-speed = <2000000>;
- shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
- };
};
/* uart1 is mapped to the pin header */
@@ -150,23 +143,6 @@
status = "okay";
};
-/* SDHCI is used to control the SDIO for wireless */
-&sdhci {
- #address-cells = <1>;
- #size-cells = <0>;
- pinctrl-names = "default";
- pinctrl-0 = <&emmc_gpio34>;
- status = "okay";
- bus-width = <4>;
- non-removable;
- mmc-pwrseq = <&wifi_pwrseq>;
-
- brcmf: wifi at 1 {
- reg = <1>;
- compatible = "brcm,bcm4329-fmac";
- };
-};
-
/* SDHOST is used to drive the SD card */
&sdhost {
pinctrl-names = "default";
@@ -174,3 +150,7 @@
status = "okay";
bus-width = <4>;
};
+
+&wifi_pwrseq {
+ reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi b/arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi
new file mode 100644
index 0000000..0b64cc1
--- /dev/null
+++ b/arch/arm/boot/dts/bcm283x-rpi-wifi-bt.dtsi
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/ {
+ wifi_pwrseq: wifi-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ };
+};
+
+/* SDHCI is used to control the SDIO for wireless */
+&sdhci {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&emmc_gpio34>;
+ bus-width = <4>;
+ non-removable;
+ mmc-pwrseq = <&wifi_pwrseq>;
+ status = "okay";
+
+ brcmf: wifi at 1 {
+ reg = <1>;
+ compatible = "brcm,bcm4329-fmac";
+ };
+};
+
+/* uart0 communicates with the BT module */
+&uart0 {
+ status = "okay";
+
+ bt: bluetooth {
+ compatible = "brcm,bcm43438-bt";
+ max-speed = <2000000>;
+ };
+};
--
2.7.4
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