Hi Maciej,
Thank you for the patch.
On Thursday, 31 August 2017 15:27:13 EEST Maciej Purski wrote:
> SiI9234 transmitter converts eTMDS/HDMI signal to MHL 1.0.
> It is controlled via I2C bus. Its interaction with other
> devices in video pipeline is performed mainly on HW level.
> The only interaction it does on device driver level is
> filtering-out unsupported video modes, it exposes drm_bridge
> interface to perform this operation.
>
> This patch is based on the code refactored by Tomasz Stanislawski
> <t.stanislaws@xxxxxxxxxxx>, which was initially developed by:
> Adam Hampson <ahampson@xxxxxxxxxxxxxxx>
> Erik Gilling <konkers@xxxxxxxxxxx>
> Shankar Bandal <shankar.b@xxxxxxxxxxx>
> Dharam Kumar <dharam.kr@xxxxxxxxxxx>
>
> Signed-off-by: Maciej Purski <m.purski@xxxxxxxxxxx>
> ---
> Changes in v2:
> - use bulk_requlators instead of single one
> - substitute some of the magic values with macros
> - improve coding style
> - improved error handling in sii9234_probe()
> ---
> .../devicetree/bindings/display/bridge/sii9234.txt | 34 +
> drivers/gpu/drm/bridge/Kconfig | 8 +
> drivers/gpu/drm/bridge/Makefile | 1 +
> drivers/gpu/drm/bridge/sii9234.c | 993 ++++++++++++++++++
> 4 files changed, 1036 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/display/bridge/sii9234.txt create mode
> 100644 drivers/gpu/drm/bridge/sii9234.c
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/sii9234.txt
> b/Documentation/devicetree/bindings/display/bridge/sii9234.txt new file
> mode 100644
> index 0000000..3ce7413
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/sii9234.txt
> @@ -0,0 +1,34 @@
> +Silicon Image SiI9234 HDMI/MHL bridge bindings
> +
> +Required properties:
> + - compatible : "sil,sii9234".
> + - reg : I2C address for TPI interface, use 0x39
> + - avcc33-supply : MHL/USB Switch Supply Voltage (3.3V)
> + - iovcc18-supply : I/O Supply Voltage (1.8V)
> + - avcc12-supply : TMDS Analog Supply Voltage (1.2V)
> + - cvcc12-supply : Digital Core Supply Voltage (1.2V)
> + - interrupts, interrupt-parent: interrupt specifier of INT pin
> + - reset-gpios: gpio specifier of RESET pin (active low)
> + - video interfaces: Device node can contain video interface port
> + node for HDMI encoder according to [1].
> +
> +[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
Doesn't this chip have two ports, one input connected to the SoC and one
output connected to an HDMI connector ? If so there should be two ports in DT
too.
> +Example:
> + sii9234@39 {
> + compatible = "sil,sii9234";
> + reg = <0x39>;
> + avcc33-supply = <&vcc33mhl>;
> + iovcc18-supply = <&vcc18mhl>;
> + avcc12-supply = <&vsil12>;
> + cvcc12-supply = <&vsil12>;
> + reset-gpios = <&gpf3 4 GPIO_ACTIVE_LOW>;
> + interrupt-parent = <&gpf3>;
> + interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
> +
> + port {
> + mhl_to_hdmi: endpoint {
> + remote-endpoint = <&hdmi_to_mhl>;
It would be useful to include the remote DT nodes in the example too.
> + };
> + };
> + };
--
Regards,
Laurent Pinchart
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