On 09/04/2014 16:53, Chen-Yu Tsai wrote: > Hi Boris, > > On Wed, Apr 9, 2014 at 9:51 PM, Boris BREZILLON > <boris.brezillon@xxxxxxxxxxxxxxxxxx> wrote: >> Hello, >> >> This series rework the sunxi pinctrl driver to support the PLx pins >> available on the A31 SoC. > Thanks for working on this. I mentioned to Maxime on IRC yesterday that > we have complete pinctrl drivers for both A31 and A23, based on our current > pinctrl-sunxi driver, in the A23 SDK. These have the complete pin mapping. Thanks for pointing this out, I'll take a look. > >> It also add missing A31 reset controller DT bindings documentation. >> >> I need those PL pins (actually I only need PL0 and PL1) to support >> the P2WI bus, which in turn is used to communicate with the AXP221 >> PMIC. > If you could, please add all the PL and PM pins. Sure, I'll add pin macros for L and M ports. > As I said, you can find complete definitions in the A23 SDK. > >> Let me know if these changes are too intrusive. > I wonder if we should do a separate driver for the new PIO controller. > Clearly it's a separate IP block, with it's own clock and reset controls. This is what I had in mind in the first place, but then I encountered several issues when doing so: 1) the gpio chip is not dynamically allocated but is declared as a static variable instead 2) we have to tweak the pinctrl base field, otherwise the pin numbers overlap 3) other things I haven't noticed yet :-) I'll try to rework the driver to be able to declare 2 separated pin controllers. > Allwinner sources list this block as "R_PIO". I suggest using this name. > Clearly "pioL" does not cover all the functionality. Fair enough. I'll modify it. > > I have started to document the PRCM block: http://linux-sunxi.org/PRCM > > Last, please send the patches to the linux-sunxi mailing list as well. > At the very least, Hans will see them and add them to sunxi-devel branch. Sure, this is an oversight, I'm using get_maintainer and just forgot to add Hans and the linux-sunxi ML. But I'll take care to add you, hans and the sunxi ML in Cc next time. Thanks for your review. Best Regards, Boris > > > Cheers, > ChenYu > >> Best Regards, >> >> Boris >> >> Boris BREZILLON (15): >> ARM: sunxi: dt: list all pinctrl compatible strings >> ARM: sunxi: dt: document pinctrl clock related properties >> ARM: sunxi: dt: add pinctrl clock-names properties >> pinctrl: sunxi: specify clk name when retrieving pinctrl pio clk >> clk: sunxi: add A31 APB0 clk gate defintions >> clk: sunxi: add A31 APB0 gates compatible string to the documentation >> ARM: sunxi: dt: define A31's APB0 clk gates node >> reset: sunxi: document sunxi's reset controllers bindings >> clk: sunxi: add A31 APB0 reset line defintions >> pinctrl: sunxi: add PL pin definitions >> pinctrl: sunxi: add support for A31 PL pins >> pinctrl: sunxi: retrieve and enable PL clk gate for A31 SoC >> pinctrl: sunxi: retrieve and enable PL reset line for A31 SoC >> pinctrl: sunxi: define A31 PL0/PL1 pins >> ARM: sunxi: dt: add support for A31's PL pins >> >> Documentation/devicetree/bindings/clock/sunxi.txt | 1 + >> .../bindings/pinctrl/allwinner,sunxi-pinctrl.txt | 13 +- >> .../bindings/reset/allwinner,sunxi-clock-reset.txt | 21 +++ >> arch/arm/boot/dts/sun4i-a10.dtsi | 1 + >> arch/arm/boot/dts/sun5i-a10s.dtsi | 1 + >> arch/arm/boot/dts/sun5i-a13.dtsi | 1 + >> arch/arm/boot/dts/sun6i-a31.dtsi | 25 ++- >> arch/arm/boot/dts/sun7i-a20.dtsi | 1 + >> drivers/clk/sunxi/clk-sunxi.c | 5 + >> drivers/pinctrl/pinctrl-sunxi-pins.h | 8 + >> drivers/pinctrl/pinctrl-sunxi.c | 205 +++++++++++++++------ >> drivers/pinctrl/pinctrl-sunxi.h | 39 +++- >> 12 files changed, 264 insertions(+), 57 deletions(-) >> create mode 100644 Documentation/devicetree/bindings/reset/allwinner,sunxi-clock-reset.txt >> >> -- >> 1.8.3.2 >> >> >> _______________________________________________ >> linux-arm-kernel mailing list >> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- 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
