linux-kernel - Re: [PATCH 1/4] omapdrm: fix compatible string for td028ttec1

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Message-Id: <C999B55A-771D-44AF-8072-2F30FE6B54B7@goldelico.com>
Date:   Thu, 9 Nov 2017 07:05:15 +0100
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Russell King <linux@...linux.org.uk>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        Sean Paul <seanpaul@...omium.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-fbdev@...r.kernel.org,
        letux-kernel@...nphoenux.org, kernel@...a-handheld.com
Subject: Re: [PATCH 1/4] omapdrm: fix compatible string for td028ttec1

Hi Laurent,

> Am 09.11.2017 um 04:33 schrieb Laurent Pinchart <laurent.pinchart@...asonboard.com>:
> 
> Hi Nikolaus,
> 
> Thank you for the patch.
> 
> On Wednesday, 8 November 2017 23:09:29 EET H. Nikolaus Schaller wrote:
>> The vendor name was "toppoly" but other panels and the vendor list
>> have defined it as "tpo". So let's fix it in driver and bindings.
>> 
>> Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
>> ---
>> .../display/panel/{toppoly,td028ttec1.txt => tpo,td028ttec1.txt} | 4 ++--
>> drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c           | 4 ++--
>> drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td028ttec1.c  | 4 ++--
>> 3 files changed, 6 insertions(+), 6 deletions(-)
>> rename
>> Documentation/devicetree/bindings/display/panel/{toppoly,td028ttec1.txt =>
>> tpo,td028ttec1.txt} (84%)
>> 
>> diff --git
>> a/Documentation/devicetree/bindings/display/panel/toppoly,td028ttec1.txt
>> b/Documentation/devicetree/bindings/display/panel/tpo,td028ttec1.txt
>> similarity index 84%
>> rename from
>> Documentation/devicetree/bindings/display/panel/toppoly,td028ttec1.txt
>> rename to
>> Documentation/devicetree/bindings/display/panel/tpo,td028ttec1.txt index
>> 7175dc3740ac..ed34253d9fb1 100644
>> --- a/Documentation/devicetree/bindings/display/panel/toppoly,td028ttec1.txt
>> +++ b/Documentation/devicetree/bindings/display/panel/tpo,td028ttec1.txt @@
>> -2,7 +2,7 @@ Toppoly TD028TTEC1 Panel
>> ========================
>> 
>> Required properties:
>> -- compatible: "toppoly,td028ttec1"
>> +- compatible: "tpo,td028ttec1"
>> 
>> Optional properties:
>> - label: a symbolic name for the panel
>> @@ -14,7 +14,7 @@ Example
>> -------
>> 
>> lcd-panel: td028ttec1@0 {
>> -	compatible = "toppoly,td028ttec1";
>> +	compatible = "tpo,td028ttec1";
>> 	reg = <0>;
>> 	spi-max-frequency = <100000>;
>> 	spi-cpol;
>> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
>> b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c index
>> 0a38a0e8c925..2dab491478c2 100644
>> --- a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
>> +++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
>> @@ -452,7 +452,7 @@ static int td028ttec1_panel_remove(struct spi_device
>> *spi) }
>> 
>> static const struct of_device_id td028ttec1_of_match[] = {
>> -	{ .compatible = "omapdss,toppoly,td028ttec1", },
>> +	{ .compatible = "omapdss,tpo,td028ttec1", },
> 
> Doesn't this break backward compatibility with existing DT ?

Yes, it does. But I am only aware of the GTA04 which uses it and
there is a separate fix).

> 
>> 	{},
>> };
>> 
>> @@ -471,7 +471,7 @@ static struct spi_driver td028ttec1_spi_driver = {
>> 
>> module_spi_driver(td028ttec1_spi_driver);
>> 
>> -MODULE_ALIAS("spi:toppoly,td028ttec1");
>> +MODULE_ALIAS("spi:tpo,td028ttec1");
>> MODULE_AUTHOR("H. Nikolaus Schaller <hns@...delico.com>");
>> MODULE_DESCRIPTION("Toppoly TD028TTEC1 panel driver");
>> MODULE_LICENSE("GPL");
>> diff --git
>> a/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td028ttec1.c
>> b/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td028ttec1.c index
>> 57e9e146ff74..39e1754746d2 100644
>> --- a/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td028ttec1.c
>> +++ b/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td028ttec1.c
>> @@ -455,7 +455,7 @@ static int td028ttec1_panel_remove(struct spi_device
>> *spi) }
>> 
>> static const struct of_device_id td028ttec1_of_match[] = {
>> -	{ .compatible = "omapdss,toppoly,td028ttec1", },
>> +	{ .compatible = "omapdss,tpo,td028ttec1", },
>> 	{},
>> };
>> 
>> @@ -474,7 +474,7 @@ static struct spi_driver td028ttec1_spi_driver = {
>> 
>> module_spi_driver(td028ttec1_spi_driver);
>> 
>> -MODULE_ALIAS("spi:toppoly,td028ttec1");
>> +MODULE_ALIAS("spi:tpo,td028ttec1");
>> MODULE_AUTHOR("H. Nikolaus Schaller <hns@...delico.com>");
>> MODULE_DESCRIPTION("Toppoly TD028TTEC1 panel driver");
>> MODULE_LICENSE("GPL");
> 
> 
> -- 
> Regards,
> 
> Laurent Pinchart
>