Am 26.07.2017 um 22:09 schrieb Eric Anholt: > Stefan Wahren <stefan.wahren@xxxxxxxx> writes: > >> The Raspberry Pi Zero W has the same components like the Zero plus >> a Cypress CYW43438 wireless chip (wifi + bl). > I sent out v2 of the arm64 patch so that hopefully we can get started > merging this. Couple of comments on a re-read. > >> Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx> >> Reviewed-by: Eric Anholt <eric@xxxxxxxxxx> >> --- >> arch/arm/boot/dts/Makefile | 3 +- >> arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 73 ++++++++++++++++++++++++++++++++ >> 2 files changed, 75 insertions(+), 1 deletion(-) >> create mode 100644 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts >> >> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile >> index ec60f4f..f3bf9397 100644 >> --- a/arch/arm/boot/dts/Makefile >> +++ b/arch/arm/boot/dts/Makefile >> @@ -74,7 +74,8 @@ 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 >> index 0000000..9c6d714 >> --- /dev/null >> +++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts >> @@ -0,0 +1,73 @@ >> +/* >> + * Copyright (C) 2017 Stefan Wahren <stefan.wahren@xxxxxxxx> >> + * >> + * 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"; >> + >> + aliases { >> + uart0 = "/soc/serial@7e201000"; >> + uart1 = "/soc/serial@7e215040"; >> + serial0 = "/soc/serial@7e201000"; >> + serial1 = "/soc/serial@7e215040"; >> + }; > Should we have this in the other board DTs? What does it do? This was the hardest part to make the Zero W useable. I took it from downstream [1], because without it i don't see anything on debug UART (config.txt already has enable_uart=1). I could add a helpful comment, but i can't explain why it's necessary for RPI Zero W and not for the older RPI Zero. Maybe the foundation guys have an alternative solution or at least explanation. [1] - https://github.com/raspberrypi/linux/blob/rpi-4.9.y/arch/arm/boot/dts/bcm2708-rpi.dtsi [2] - https://github.com/raspberrypi/linux/blob/rpi-4.9.y/arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts > >> + >> + 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 { >> + pinctrl-0 = <&gpioout &alt0>; >> + >> + wl_on: wl-on { >> + brcm,pins = <41>; >> + brcm,function = <BCM2835_FSEL_GPIO_OUT>; >> + }; >> +}; > Would you be up for adding gpio-line-names based on the dt-blob.dts? Sure > >> + >> +&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"; >> +}; >> -- >> 2.7.4 >> >> >> _______________________________________________ >> linux-arm-kernel mailing list >> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
