| Message ID | 20200405110022.3849-1-justin.swartz@risingedge.co.za (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ARM: dts: enable WLAN for Mecer Xtreme Mini S6 | expand |
Hi Justin, Have a look at the documents: Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml Documentation/devicetree/bindings/mmc/synopsys-dw-mshc-common.yaml Documentation/devicetree/bindings/mmc/mmc-controller.yaml Fix &emmc as well. > From: Justin Swartz <justin.swartz@risingedge.co.za> > To: Heiko Stuebner <heiko@sntech.de>, > Rob Herring <robh+dt@kernel.org>, > Mark Rutland <mark.rutland@arm.com> > Cc: Justin Swartz <justin.swartz@risingedge.co.za>, > linux-arm-kernel@lists.infradead.org, > linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, > linux-kernel@vger.kernel.org > Subject: [PATCH] ARM: dts: enable WLAN for Mecer Xtreme Mini S6 > Date: Sun, 5 Apr 2020 11:00:21 +0000 > Message-ID: <20200405110022.3849-1-justin.swartz@risingedge.co.za> (raw) > > The Mecer Xtreme Mini S6 features a wireless module, based on a > Realtek 8723BS, which provides WLAN and Bluetooth connectivity via > SDIO and UART interfaces respectively. > > Define a simple MMC power sequence that declares the GPIO pins > connected to the module's WLAN Disable and Bluetooth Disable pins > as active low reset signals, because both signals must be deasserted > for WLAN radio operation. > > Configure the host's SDIO interface for High Speed mode with 1.8v > I/O signalling and IRQ detection over a 4-bit wide bus. > > Signed-off-by: Justin Swartz <justin.swartz@risingedge.co.za> > --- > arch/arm/boot/dts/rk3229-xms6.dts | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/arch/arm/boot/dts/rk3229-xms6.dts b/arch/arm/boot/dts/rk3229-xms6.dts > index 679fc2b00..cdfcef41b 100644 > --- a/arch/arm/boot/dts/rk3229-xms6.dts > +++ b/arch/arm/boot/dts/rk3229-xms6.dts > @@ -39,6 +39,12 @@ > }; > }; > > + sdio_pwrseq: sdio-pwrseq { > + compatible = "mmc-pwrseq-simple"; > + reset-gpios = <&gpio2 26 GPIO_ACTIVE_LOW>, > + <&gpio2 29 GPIO_ACTIVE_LOW>; > + }; > + > vcc_host: vcc-host-regulator { > compatible = "regulator-fixed"; > enable-active-high; > @@ -202,6 +208,18 @@ > status = "okay"; > }; > > +&sdio { > + bus-width = <4>; > + cap-sd-highspeed; > + cap-sdio-irq; > + disable-wp; Not used in combination with sdio and emmc. > + mmc-pwrseq = <&sdio_pwrseq>; > + non-removable; > + num-slots = <1>; Deprecated. > + vqmmc-supply = <&vccio_1v8>; > + status = "okay"; > +}; > + > &sdmmc { > cap-mmc-highspeed; > disable-wp; > -- > 2.11.0
diff --git a/arch/arm/boot/dts/rk3229-xms6.dts b/arch/arm/boot/dts/rk3229-xms6.dts index 679fc2b00..cdfcef41b 100644 --- a/arch/arm/boot/dts/rk3229-xms6.dts +++ b/arch/arm/boot/dts/rk3229-xms6.dts @@ -39,6 +39,12 @@ }; }; + sdio_pwrseq: sdio-pwrseq { + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpio2 26 GPIO_ACTIVE_LOW>, + <&gpio2 29 GPIO_ACTIVE_LOW>; + }; + vcc_host: vcc-host-regulator { compatible = "regulator-fixed"; enable-active-high; @@ -202,6 +208,18 @@ status = "okay"; }; +&sdio { + bus-width = <4>; + cap-sd-highspeed; + cap-sdio-irq; + disable-wp; + mmc-pwrseq = <&sdio_pwrseq>; + non-removable; + num-slots = <1>; + vqmmc-supply = <&vccio_1v8>; + status = "okay"; +}; + &sdmmc { cap-mmc-highspeed; disable-wp;
The Mecer Xtreme Mini S6 features a wireless module, based on a Realtek 8723BS, which provides WLAN and Bluetooth connectivity via SDIO and UART interfaces respectively. Define a simple MMC power sequence that declares the GPIO pins connected to the module's WLAN Disable and Bluetooth Disable pins as active low reset signals, because both signals must be deasserted for WLAN radio operation. Configure the host's SDIO interface for High Speed mode with 1.8v I/O signalling and IRQ detection over a 4-bit wide bus. Signed-off-by: Justin Swartz <justin.swartz@risingedge.co.za> --- arch/arm/boot/dts/rk3229-xms6.dts | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)