linux-kernel - Re: [PATCH 2/5] pinctrl: meson: Add support to set direction with a secure monitor call

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Message-ID: <d319d871-ba93-ab1d-dae4-b44916161e85@baylibre.com>
Date:   Thu, 2 Aug 2018 09:52:53 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     khilman@...libre.com, linus.walleij@...aro.org,
        linux-amlogic@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/5] pinctrl: meson: Add support to set direction with a
 secure monitor call

On 01/08/2018 22:23, Martin Blumenstingl wrote:
> Hi Neil,
> 
> On Wed, Aug 1, 2018 at 12:05 PM Neil Armstrong <narmstrong@...libre.com> wrote:
>>
>> The Amlogic Meson GX and AXG SoCs needs to do a Secure Monitor call to
>> set the TEST_N pin direction.
>> This patch adds a "smc" boolean to the bank structure to differentiate
>> the TEST_N bank and call the Secure Monitor in the _input/_output functions.
>>
>> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
>> ---
>>  drivers/pinctrl/meson/Kconfig         |  1 +
>>  drivers/pinctrl/meson/pinctrl-meson.c | 31 ++++++++++++++++++++++++++-----
>>  drivers/pinctrl/meson/pinctrl-meson.h | 10 +++++++++-
>>  3 files changed, 36 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig
>> index c80951d..1b90470 100644
>> --- a/drivers/pinctrl/meson/Kconfig
>> +++ b/drivers/pinctrl/meson/Kconfig
>> @@ -8,6 +8,7 @@ menuconfig PINCTRL_MESON
>>         select GPIOLIB
>>         select OF_GPIO
>>         select REGMAP_MMIO
>> +       select MESON_SM
> I wonder why PINCTRL_MESON has to select MESON_SM - shouldn't
> PINCTRL_MESON_GXBB, PINCTRL_MESON_GXL and PINCTRL_MESON_AXG select it
> instead?
> selecting MESON_SM is probably no-op on Meson8 and Meson8b (which
> don't have the GX secure monitor), but I haven't tested it yet

Hi Martin, you are right !

I will fix it on v2..

Neil

> 
> 
> Regards
> Martin
>