| Message ID | 7ede7ca6-f8db-4b38-a1cc-8be3d0db7fae@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
Hi Jesse: On 10:18 Mon 16 Sep , Jesse T wrote: > On Sun, Sep 15, 2024 at 10:45 PM Yixun Lan <dlan@gentoo.org> wrote: > > > > Hi Jesse > > > > On 10:45 Sun 15 Sep , Jesse Taube wrote: > > > > > > Before pinctrl driver implemented, the uart0 controller reply on > > > bootloader for setting correct pin mux and configurations. > > > > > > Now, let's add pinctrl property to uart0 of Bananapi-F3 board. > > > > > > Signed-off-by: Yixun Lan <dlan@gentoo.org> > > > --- > > > arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 3 +++ > > > arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 20 ++++++++++++++++++++ > > > arch/riscv/boot/dts/spacemit/k1.dtsi | 5 +++++ > > > 3 files changed, 28 insertions(+) > > > > > > diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts > > > b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts > > > index 023274189b492..bc88d4de25a62 100644 > > > --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts > > > +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts > > > @@ -4,6 +4,7 @@ > > > */ > > > > > > #include "k1.dtsi" > > > +#include "k1-pinctrl.dtsi" > > > > > > / { > > > model = "Banana Pi BPI-F3"; > > > @@ -15,5 +16,7 @@ chosen { > > > }; > > > > > > &uart0 { > > > + pinctrl-names = "default"; > > > + pinctrl-0 = <&uart0_2_cfg>; > > > status = "okay"; > > > }; > > > diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi > > > b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi > > > new file mode 100644 > > > index 0000000000000..a8eac5517f857 > > > --- /dev/null > > > +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi > > > @@ -0,0 +1,20 @@ > > > +// SPDX-License-Identifier: GPL-2.0 OR MIT > > > +/* > > > + * Copyright (c) 2024 Yixun Lan <dlan@gentoo.org> > > > + */ > > > + > > > +#include <dt-bindings/gpio/gpio.h> > > > + > > > +#define K1_PADCONF(pin, func) (((pin) << 16) | (func)) > > > > > > It would be nice to have a pinfunc header like > > > arch/arm/boot/dts/nxp/imx/imx7ulp-pinfunc.h. > > > It would reference and encode the data of "3.2 Pin Multiplex" in > > > https://developer.spacemit.com/documentation?token=An1vwTwKaigaXRkYfwmcznTXned > > > , the document you attached in the summary. > > Not sure if it's worth the effort.. > > I can send a future patch for this. > Ok, thanks, no objection from my side but, that gonna be a lot work as you need to list ALL the functions.. > > > > I gave up of introducing another macro, as it's exactly one to one mapping to > > GPIO ID, which mean pin(x) -> GPIO_x > > > > maybe I could put a comment at K1_PADCONF() to document this? > > I'm weary the Manual may not exist on the site in the future or > will change formats. But it would be nice otherwise. > > > > > /* pin is same to the GPIO id according to 3.2 Pin Multiplex of User Manual */ > > #define K1_PADCONF(pin, func) (((pin) << 16) | (func)) > > > > does this sound good to you? > > Sure, add it. > > Also sorry for messing up the reply-to thing thunderbird is confusing. > > Thanks, > Jesse Taube > > > > > > > > > Otherwise, > > > Acked-by: Jesse Taube <Mr.Bossman075@gmail.com> > > > > > thanks > > > > > + > > > +&pinctrl { > > > + uart0_2_cfg: uart0-2-cfg { > > > + uart0-2-pins { > > > + pinmux = <K1_PADCONF(68, 2)>, > > > + <K1_PADCONF(69, 2)>; > > > + > > > + bias-pull-up = <0>; > > > + drive-strength = <32>; > > > + }; > > > + }; > > > +}; > > > diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi > > > b/arch/riscv/boot/dts/spacemit/k1.dtsi > > > index 0777bf9e01183..a2d5f7d4a942a 100644 > > > --- a/arch/riscv/boot/dts/spacemit/k1.dtsi > > > +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi > > > @@ -416,6 +416,11 @@ uart9: serial@d4017800 { > > > status = "disabled"; > > > }; > > > > > > + pinctrl: pinctrl@d401e000 { > > > + compatible = "spacemit,k1-pinctrl"; > > > + reg = <0x0 0xd401e000 0x0 0x400>; > > > + }; > > > + > > > plic: interrupt-controller@e0000000 { > > > compatible = "spacemit,k1-plic", "sifive,plic-1.0.0"; > > > reg = <0x0 0xe0000000 0x0 0x4000000>; > > > > > > -- > > > 2.45.2 > > > > -- > > Yixun Lan (dlan) > > Gentoo Linux Developer > > GPG Key ID AABEFD55
diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 023274189b492..bc88d4de25a62 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -4,6 +4,7 @@ */ #include "k1.dtsi" +#include "k1-pinctrl.dtsi" / { model = "Banana Pi BPI-F3"; @@ -15,5 +16,7 @@ chosen { }; &uart0 { + pinctrl-names = "default"; + pinctrl-0 = <&uart0_2_cfg>; status = "okay"; }; diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi new file mode 100644 index 0000000000000..a8eac5517f857 --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright (c) 2024 Yixun Lan <dlan@gentoo.org> + */ + +#include <dt-bindings/gpio/gpio.h> + +#define K1_PADCONF(pin, func) (((pin) << 16) | (func)) It would be nice to have a pinfunc header like arch/arm/boot/dts/nxp/imx/imx7ulp-pinfunc.h. It would reference and encode the data of "3.2 Pin Multiplex" in https://developer.spacemit.com/documentation?token=An1vwTwKaigaXRkYfwmcznTXned , the document you attached in the summary. Otherwise, Acked-by: Jesse Taube <Mr.Bossman075@gmail.com> + +&pinctrl { + uart0_2_cfg: uart0-2-cfg { + uart0-2-pins { + pinmux = <K1_PADCONF(68, 2)>, + <K1_PADCONF(69, 2)>; + + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; +}; diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 0777bf9e01183..a2d5f7d4a942a 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -416,6 +416,11 @@ uart9: serial@d4017800 { status = "disabled"; }; + pinctrl: pinctrl@d401e000 { + compatible = "spacemit,k1-pinctrl"; + reg = <0x0 0xd401e000 0x0 0x400>; + }; + plic: interrupt-controller@e0000000 { compatible = "spacemit,k1-plic", "sifive,plic-1.0.0"; reg = <0x0 0xe0000000 0x0 0x4000000>;
Before pinctrl driver implemented, the uart0 controller reply on bootloader for setting correct pin mux and configurations. Now, let's add pinctrl property to uart0 of Bananapi-F3 board. Signed-off-by: Yixun Lan <dlan@gentoo.org> --- arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 3 +++ arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 20 ++++++++++++++++++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 5 +++++ 3 files changed, 28 insertions(+)