linux-kernel - Re: [PATCH 2/2] gpio: tegra186: Add support for Tegra234 gpio

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Date:   Tue, 2 Nov 2021 14:21:45 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Prathamesh Shete <pshete@...dia.com>
Cc:     linus.walleij@...aro.org, bgolaszewski@...libre.com,
        jonathanh@...dia.com, linux-gpio@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        smangipudi@...dia.com
Subject: Re: [PATCH 2/2] gpio: tegra186: Add support for Tegra234 gpio

On Thu, Oct 28, 2021 at 04:47:27PM +0200, Thierry Reding wrote:
> On Thu, Oct 21, 2021 at 06:00:21PM +0530, Prathamesh Shete wrote:
> > Add support for the Tegra234 GPIO bank configuration.
> > 
> > Signed-off-by: Prathamesh Shete <pshete@...dia.com>
> > ---
> >  drivers/gpio/gpio-tegra186.c | 74 ++++++++++++++++++++++++++++++++++++
> >  1 file changed, 74 insertions(+)
> > 
> > diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c
> > index d38980b9923a..edcc91b35e1e 100644
> > --- a/drivers/gpio/gpio-tegra186.c
> > +++ b/drivers/gpio/gpio-tegra186.c
> > @@ -14,6 +14,7 @@
> >  
> >  #include <dt-bindings/gpio/tegra186-gpio.h>
> >  #include <dt-bindings/gpio/tegra194-gpio.h>
> > +#include <dt-bindings/gpio/tegra234-gpio.h>
> >  
> >  /* security registers */
> >  #define TEGRA186_GPIO_CTL_SCR 0x0c
> > @@ -877,6 +878,73 @@ static const struct tegra_gpio_soc tegra194_aon_soc = {
> >  	.instance = 1,
> >  };
> >  
> > +#define TEGRA234_MAIN_GPIO_PORT(_name, _bank, _port, _pins)	\
> > +	[TEGRA234_MAIN_GPIO_PORT_##_name] = {			\
> > +		.name = #_name,					\
> > +		.bank = _bank,					\
> > +		.port = _port,					\
> > +		.pins = _pins,					\
> > +	}
> > +
> > +static const struct tegra_gpio_port tegra234_main_ports[] = {
> > +	TEGRA234_MAIN_GPIO_PORT(A, 0, 0, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(B, 0, 3, 1),
> > +	TEGRA234_MAIN_GPIO_PORT(C, 5, 1, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(D, 5, 2, 4),
> > +	TEGRA234_MAIN_GPIO_PORT(E, 5, 3, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(F, 5, 4, 6),
> > +	TEGRA234_MAIN_GPIO_PORT(G, 4, 0, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(H, 4, 1, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(I, 4, 2, 7),
> > +	TEGRA234_MAIN_GPIO_PORT(J, 5, 0, 6),
> > +	TEGRA234_MAIN_GPIO_PORT(K, 3, 0, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(L, 3, 1, 4),
> > +	TEGRA234_MAIN_GPIO_PORT(M, 2, 0, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(N, 2, 1, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(P, 2, 2, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(Q, 2, 3, 8),
> > +	TEGRA234_MAIN_GPIO_PORT(R, 2, 4, 6),
> 
> I stumbled across an old patch I had created a couple of months ago that
> is very similar to this one. However, at the time I had added a couple
> more ports here, namely S, T, U and V. Is there a reason why you're not
> including those here?

Nevermind, looks like my patch had been based on out-of-date
documentation, so the table here is correct.

That said, I noticed that you didn't include an update to the device
tree bindings documentation. I do have that, in addition to a conversion
to the new json-schema format. Do you mind if I resend your two patches
here along with the DT documentatino update that I have? I've also got
the DTS changes for Tegra234 to expose these, which I would also like to
include for completeness.

Thierry

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