Noralf Trønnes
df0a9e8d30
dt-bindings: display: sitronix, st7735r: Remove spi-max-frequency limit
...
The datasheet lists the minimum Serial clock cycle (Write) as 66ns which is
15MHz. Mostly it can do much better than that and is in fact often run at
32MHz. With a clever driver that runs configuration commands at a low speed
and only the pixel data at the maximum speed the configuration can't be
messed up by transfer errors and the speed is only limited by the amount of
pixel glitches that one is able to tolerate.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org >
Acked-by: Rob Herring <robh@kernel.org >
Acked-by: David Lechner <david@lechnology.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20211124150757.17929-4-noralf@tronnes.org
2022-03-09 10:28:37 +00:00
Noralf Trønnes
a2e8cbb277
dt-bindings: display: sitronix, st7735r: Make reset-gpios optional
...
There are other ways than using a gpio to reset the controller so make
this property optional.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org >
Acked-by: Rob Herring <robh@kernel.org >
Acked-by: David Lechner <david@lechnology.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20211124150757.17929-3-noralf@tronnes.org
2022-03-09 10:28:26 +00:00
Noralf Trønnes
471e201f54
dt-bindings: display: sitronix, st7735r: Fix backlight in example
...
The backlight property was lost during conversion to yaml in commit
abdd9e3705abdd9e3705noralf@tronnes.org >
Acked-by: Rob Herring <robh@kernel.org >
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be >
Acked-by: David Lechner <david@lechnology.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20211124150757.17929-2-noralf@tronnes.org
2022-03-09 10:28:09 +00:00
Sam Ravnborg
c2d4290ba0
dt-bindings: restrict properties for sitronix,st7735r
...
David Lechner noticed (paraphrased):
- not all properties from panel-common are applicable.
- missing optional rotation and backlight properties
Fix this by listing all allowed properties,
and do not allow other properties.
Fixes: abdd9e3705david@lechnology.com >
Signed-off-by: Sam Ravnborg <sam@ravnborg.org >
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be >
Acked-by: Rob Herring <robh@kernel.org >
Cc: David Lechner <david@lechnology.com >
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200120190249.GA9619@ravnborg.org
2020-01-23 19:16:36 +01:00
Geert Uytterhoeven
3a1a6be40b
dt-bindings: display: sitronix,st7735r: Add Okaya RH128128T
...
Document support for the Okaya RH128128T display, which is a 128x128
1.44" TFT display driven by a Sitronix ST7715R TFT Controller/Driver.
It can be found on e.g. the Renesas YRSK-LCD-PMOD extension board, which
comes with various Renesas development kits (e.g. Renesas Starter Kit+
for RZ/A1H[1]).
ST7715R and ST7735R are very similar. Their major difference is that
the former is restricted to displays of up to 132x132 pixels, while the
latter supports displays up to 132x162 pixels.
[1] https://renesasrulz.com/the_vault/f/archive-forum/4981/upgrading-to-the-renesas-rz-a1h
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be >
Reviewed-by: Sam Ravnborg <sam@ravnborg.org >
Signed-off-by: Sam Ravnborg <sam@ravnborg.org >
Link: https://patchwork.freedesktop.org/patch/msgid/20200115124548.3951-3-geert+renesas@glider.be
2020-01-19 18:06:55 +01:00
Geert Uytterhoeven
abdd9e3705
dt-bindings: display: sitronix,st7735r: Convert to DT schema
...
Convert the DT binding documentation for Sitronix ST7735R displays to DT
schema.
Add a reference to the Adafruit 1.8" LCD while at it.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be >
Reviewed-by: Sam Ravnborg <sam@ravnborg.org >
Signed-off-by: Sam Ravnborg <sam@ravnborg.org >
Link: https://patchwork.freedesktop.org/patch/msgid/20200115124548.3951-2-geert+renesas@glider.be
2020-01-19 18:06:39 +01:00
