[PATCH 1/2] dt-bindings: Add E Ink to vendor bindings

[PATCH 1/2] dt-bindings: Add E Ink to vendor bindings

[Alistair Francis]

Add the E Ink Corporation to the vendor bindings.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 996f4de2fff5..6c9323dc9b78 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -329,6 +329,8 @@ patternProperties:
     description: eGalax_eMPIA Technology Inc
   "^einfochips,.*":
     description: Einfochips
+  "^eink,.*":
+    description: E Ink Corporation
   "^elan,.*":
     description: Elan Microelectronic Corp.
   "^element14,.*":
-- 
2.31.1

[PATCH 1/2] dt-bindings: Add E Ink to vendor bindings

[Alistair Francis]

Add the E Ink Corporation to the vendor bindings.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 996f4de2fff5..6c9323dc9b78 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -329,6 +329,8 @@ patternProperties:
     description: eGalax_eMPIA Technology Inc
   "^einfochips,.*":
     description: Einfochips
+  "^eink,.*":
+    description: E Ink Corporation
   "^elan,.*":
     description: Elan Microelectronic Corp.
   "^element14,.*":
-- 
2.31.1

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dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH 2/2] drm/panel: Add support for E Ink VB3300-KCA

[Alistair Francis]

Add support for the 10.3" E Ink panel described at:
https://www.eink.com/product.html?type=productdetail&id=7

Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
 drivers/gpu/drm/panel/panel-simple.c | 29 ++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 4e2dad314c79..f1f6fd2517f6 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1964,6 +1964,32 @@ static const struct panel_desc edt_etm0700g0bdh6 = {
 	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
 };
 
+static const struct display_timing eink_vb3300_kca_timing = {
+	.pixelclock = { 40000000, 40000000, 40000000 },
+	.hactive = { 334, 334, 334 },
+	.hfront_porch = { 1, 1, 1 },
+	.hback_porch = { 1, 1, 1 },
+	.hsync_len = { 1, 1, 1 },
+	.vactive = { 1405, 1405, 1405 },
+	.vfront_porch = { 1, 1, 1 },
+	.vback_porch = { 1, 1, 1 },
+	.vsync_len = { 1, 1, 1 },
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+};
+
+static const struct panel_desc eink_vb3300_kca = {
+	.modes = &edt_etm0700g0dh6_mode,
+	.num_modes = 1,
+	.bpc = 6,
+	.size = {
+		.width = 157,
+		.height = 209,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
+};
+
 static const struct display_timing evervision_vgg804821_timing = {
 	.pixelclock = { 27600000, 33300000, 50000000 },
 	.hactive = { 800, 800, 800 },
@@ -4232,6 +4258,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "edt,etm0700g0dh6",
 		.data = &edt_etm0700g0dh6,
+	}, {
+		.compatible = "eink,vb3300-kca",
+		.data = &eink_vb3300_kca,
 	}, {
 		.compatible = "edt,etm0700g0bdh6",
 		.data = &edt_etm0700g0bdh6,
-- 
2.31.1

[PATCH 2/2] drm/panel: Add support for E Ink VB3300-KCA

[Alistair Francis]

Add support for the 10.3" E Ink panel described at:
https://www.eink.com/product.html?type=productdetail&id=7

Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
 drivers/gpu/drm/panel/panel-simple.c | 29 ++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 4e2dad314c79..f1f6fd2517f6 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1964,6 +1964,32 @@ static const struct panel_desc edt_etm0700g0bdh6 = {
 	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
 };
 
+static const struct display_timing eink_vb3300_kca_timing = {
+	.pixelclock = { 40000000, 40000000, 40000000 },
+	.hactive = { 334, 334, 334 },
+	.hfront_porch = { 1, 1, 1 },
+	.hback_porch = { 1, 1, 1 },
+	.hsync_len = { 1, 1, 1 },
+	.vactive = { 1405, 1405, 1405 },
+	.vfront_porch = { 1, 1, 1 },
+	.vback_porch = { 1, 1, 1 },
+	.vsync_len = { 1, 1, 1 },
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+};
+
+static const struct panel_desc eink_vb3300_kca = {
+	.modes = &edt_etm0700g0dh6_mode,
+	.num_modes = 1,
+	.bpc = 6,
+	.size = {
+		.width = 157,
+		.height = 209,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
+};
+
 static const struct display_timing evervision_vgg804821_timing = {
 	.pixelclock = { 27600000, 33300000, 50000000 },
 	.hactive = { 800, 800, 800 },
@@ -4232,6 +4258,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "edt,etm0700g0dh6",
 		.data = &edt_etm0700g0dh6,
+	}, {
+		.compatible = "eink,vb3300-kca",
+		.data = &eink_vb3300_kca,
 	}, {
 		.compatible = "edt,etm0700g0bdh6",
 		.data = &edt_etm0700g0bdh6,
-- 
2.31.1

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Re: [PATCH 2/2] drm/panel: Add support for E Ink VB3300-KCA

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 9134 bytes --]

Hi Alistair,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linux/master linus/master v5.12-rc8 next-20210416]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Alistair-Francis/dt-bindings-Add-E-Ink-to-vendor-bindings/20210419-164835
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: powerpc-randconfig-r013-20210419 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 2b50f5a4343f8fb06acaa5c36355bcf58092c9cd)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/0day-ci/linux/commit/640f815589e788925b67d26bad5acec31594f456
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Alistair-Francis/dt-bindings-Add-E-Ink-to-vendor-bindings/20210419-164835
        git checkout 640f815589e788925b67d26bad5acec31594f456
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   ^
   arch/powerpc/include/asm/io.h:537:62: note: expanded from macro '__do_outl'
   #define __do_outl(val, port)    writel(val,(PCI_IO_ADDR)_IO_BASE+port);
                                              ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/gpu/drm/panel/panel-simple.c:26:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:43:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:187:1: note: expanded from here
   __do_insb
   ^
   arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb'
   #define __do_insb(p, b, n)      readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/gpu/drm/panel/panel-simple.c:26:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:189:1: note: expanded from here
   __do_insw
   ^
   arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw'
   #define __do_insw(p, b, n)      readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/gpu/drm/panel/panel-simple.c:26:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:191:1: note: expanded from here
   __do_insl
   ^
   arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl'
   #define __do_insl(p, b, n)      readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/gpu/drm/panel/panel-simple.c:26:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:193:1: note: expanded from here
   __do_outsb
   ^
   arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb'
   #define __do_outsb(p, b, n)     writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/gpu/drm/panel/panel-simple.c:26:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:195:1: note: expanded from here
   __do_outsw
   ^
   arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw'
   #define __do_outsw(p, b, n)     writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/gpu/drm/panel/panel-simple.c:26:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:197:1: note: expanded from here
   __do_outsl
   ^
   arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl'
   #define __do_outsl(p, b, n)     writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
>> drivers/gpu/drm/panel/panel-simple.c:1967:36: warning: unused variable 'eink_vb3300_kca_timing' [-Wunused-const-variable]
   static const struct display_timing eink_vb3300_kca_timing = {
                                      ^
   13 warnings generated.


vim +/eink_vb3300_kca_timing +1967 drivers/gpu/drm/panel/panel-simple.c

  1966	
> 1967	static const struct display_timing eink_vb3300_kca_timing = {
  1968		.pixelclock = { 40000000, 40000000, 40000000 },
  1969		.hactive = { 334, 334, 334 },
  1970		.hfront_porch = { 1, 1, 1 },
  1971		.hback_porch = { 1, 1, 1 },
  1972		.hsync_len = { 1, 1, 1 },
  1973		.vactive = { 1405, 1405, 1405 },
  1974		.vfront_porch = { 1, 1, 1 },
  1975		.vback_porch = { 1, 1, 1 },
  1976		.vsync_len = { 1, 1, 1 },
  1977		.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
  1978			 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
  1979	};
  1980	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 25201 bytes --]

Re: [PATCH 2/2] drm/panel: Add support for E Ink VB3300-KCA

[Rob Herring]

On Mon, Apr 19, 2021 at 07:09:56AM +1000, Alistair Francis wrote:
> Add support for the 10.3" E Ink panel described at:
> https://www.eink.com/product.html?type=productdetail&id=7
> 
> Signed-off-by: Alistair Francis <alistair@alistair23.me>
> ---
>  drivers/gpu/drm/panel/panel-simple.c | 29 ++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 4e2dad314c79..f1f6fd2517f6 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1964,6 +1964,32 @@ static const struct panel_desc edt_etm0700g0bdh6 = {
>  	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
>  };
>  
> +static const struct display_timing eink_vb3300_kca_timing = {
> +	.pixelclock = { 40000000, 40000000, 40000000 },
> +	.hactive = { 334, 334, 334 },
> +	.hfront_porch = { 1, 1, 1 },
> +	.hback_porch = { 1, 1, 1 },
> +	.hsync_len = { 1, 1, 1 },
> +	.vactive = { 1405, 1405, 1405 },
> +	.vfront_porch = { 1, 1, 1 },
> +	.vback_porch = { 1, 1, 1 },
> +	.vsync_len = { 1, 1, 1 },
> +	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
> +		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
> +};
> +
> +static const struct panel_desc eink_vb3300_kca = {
> +	.modes = &edt_etm0700g0dh6_mode,
> +	.num_modes = 1,
> +	.bpc = 6,
> +	.size = {
> +		.width = 157,
> +		.height = 209,
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
> +	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
> +};
> +
>  static const struct display_timing evervision_vgg804821_timing = {
>  	.pixelclock = { 27600000, 33300000, 50000000 },
>  	.hactive = { 800, 800, 800 },
> @@ -4232,6 +4258,9 @@ static const struct of_device_id platform_of_match[] = {
>  	}, {
>  		.compatible = "edt,etm0700g0dh6",
>  		.data = &edt_etm0700g0dh6,
> +	}, {
> +		.compatible = "eink,vb3300-kca",

You have to document this string too.

Re: [PATCH 2/2] drm/panel: Add support for E Ink VB3300-KCA

[Rob Herring]

On Mon, Apr 19, 2021 at 07:09:56AM +1000, Alistair Francis wrote:
> Add support for the 10.3" E Ink panel described at:
> https://www.eink.com/product.html?type=productdetail&id=7
> 
> Signed-off-by: Alistair Francis <alistair@alistair23.me>
> ---
>  drivers/gpu/drm/panel/panel-simple.c | 29 ++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 4e2dad314c79..f1f6fd2517f6 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1964,6 +1964,32 @@ static const struct panel_desc edt_etm0700g0bdh6 = {
>  	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
>  };
>  
> +static const struct display_timing eink_vb3300_kca_timing = {
> +	.pixelclock = { 40000000, 40000000, 40000000 },
> +	.hactive = { 334, 334, 334 },
> +	.hfront_porch = { 1, 1, 1 },
> +	.hback_porch = { 1, 1, 1 },
> +	.hsync_len = { 1, 1, 1 },
> +	.vactive = { 1405, 1405, 1405 },
> +	.vfront_porch = { 1, 1, 1 },
> +	.vback_porch = { 1, 1, 1 },
> +	.vsync_len = { 1, 1, 1 },
> +	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
> +		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
> +};
> +
> +static const struct panel_desc eink_vb3300_kca = {
> +	.modes = &edt_etm0700g0dh6_mode,
> +	.num_modes = 1,
> +	.bpc = 6,
> +	.size = {
> +		.width = 157,
> +		.height = 209,
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
> +	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
> +};
> +
>  static const struct display_timing evervision_vgg804821_timing = {
>  	.pixelclock = { 27600000, 33300000, 50000000 },
>  	.hactive = { 800, 800, 800 },
> @@ -4232,6 +4258,9 @@ static const struct of_device_id platform_of_match[] = {
>  	}, {
>  		.compatible = "edt,etm0700g0dh6",
>  		.data = &edt_etm0700g0dh6,
> +	}, {
> +		.compatible = "eink,vb3300-kca",

You have to document this string too.
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Re: [PATCH 1/2] dt-bindings: Add E Ink to vendor bindings

[Rob Herring]

On Mon, 19 Apr 2021 07:09:55 +1000, Alistair Francis wrote:
> Add the E Ink Corporation to the vendor bindings.
> 
> Signed-off-by: Alistair Francis <alistair@alistair23.me>
> ---
>  Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH 1/2] dt-bindings: Add E Ink to vendor bindings

[Rob Herring]

On Mon, 19 Apr 2021 07:09:55 +1000, Alistair Francis wrote:
> Add the E Ink Corporation to the vendor bindings.
> 
> Signed-off-by: Alistair Francis <alistair@alistair23.me>
> ---
>  Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>
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