[PATCH 5/9] ARM: dts: bcm283x-rpi: Move Wifi/BT into separate dtsi
From: Stefan Wahren <hidden>
Date: 2021-08-01 12:29:47
Also in:
linux-arm-kernel
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- 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@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@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@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@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@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@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