linux-kernel - Re: [PATCH v3 1/3] firmware: xilinx: Add pinctrl support

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Date:   Tue, 2 Mar 2021 17:09:33 +0900
From:   Nobuhiro Iwamatsu <iwamatsu@...auri.org>
To:     Michal Simek <monstr@...str.eu>
Cc:     Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@...inx.com>,
        saikrishna12468@...il.com, devicetree@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Michal Simek <michal.simek@...inx.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-gpio@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        git@...inx.com, linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 1/3] firmware: xilinx: Add pinctrl support

Hi,

2021年3月1日(月) 16:07 Michal Simek <monstr@...str.eu>:
>
> Hi Noburiho,
>
> On 2/28/21 1:17 AM, Nobuhiro Iwamatsu wrote:
> > Hi,
> >
> > 2021年2月12日(金) 21:10 Sai Krishna Potthuri
> > <lakshmi.sai.krishna.potthuri@...inx.com>:
> >>
> >> Adding pinctrl support to query platform specific information (pins)
> >> from firmware.
> >>
> >> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@...inx.com>
> >> Acked-by: Michal Simek <michal.simek@...inx.com>
> >> ---
> >>  drivers/firmware/xilinx/zynqmp.c     | 114 +++++++++++++++++++++++++++
> >>  include/linux/firmware/xlnx-zynqmp.h |  90 +++++++++++++++++++++
> >>  2 files changed, 204 insertions(+)
> >>
> >> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> >> index efb8a66efc68..299c3d5a9ebd 100644
> >> --- a/drivers/firmware/xilinx/zynqmp.c
> >> +++ b/drivers/firmware/xilinx/zynqmp.c
> >> @@ -784,6 +784,120 @@ int zynqmp_pm_fpga_get_status(u32 *value)
> >>  }
> >>  EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_get_status);
> >>
> >
> > <snip>
> >
> >> @@ -125,6 +131,12 @@ enum pm_query_id {
> >>         PM_QID_CLOCK_GET_FIXEDFACTOR_PARAMS,
> >>         PM_QID_CLOCK_GET_PARENTS,
> >>         PM_QID_CLOCK_GET_ATTRIBUTES,
> >> +       PM_QID_PINCTRL_GET_NUM_PINS = 6,
> >> +       PM_QID_PINCTRL_GET_NUM_FUNCTIONS = 7,
> >> +       PM_QID_PINCTRL_GET_NUM_FUNCTION_GROUPS = 8,
> >> +       PM_QID_PINCTRL_GET_FUNCTION_NAME = 9,
> >> +       PM_QID_PINCTRL_GET_FUNCTION_GROUPS = 10,
> >> +       PM_QID_PINCTRL_GET_PIN_GROUPS = 11,
> >
> > These do not have to have values, Because PM_QID_INVALID is 0.
> >
> >>         PM_QID_CLOCK_GET_NUM_CLOCKS = 12,
> >
> > And you can drop value from this.
>
> Please take a look at
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/include/linux/firmware/xlnx-zynqmp.h?h=v5.12-rc1&id=1077d4367ab3b97f6db2f66c87289af863652215
>
> We are using explicit values as was recommended by Greg.

Oh, sorry.
I didn't see this comment. Thank you for this information.

>
> Thanks,
> Michal
>

Best regards,
  Nobuhiro


-- 
Nobuhiro Iwamatsu
   iwamatsu at {nigauri.org / debian.org}
   GPG ID: 40AD1FA6