From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexey Brodkin Subject: [PATCH 2/5 v5] drm: Add DT bindings documentation for ARC PGU display controller Date: Mon, 28 Mar 2016 14:36:36 +0300 Message-ID: <1459164999-11850-3-git-send-email-abrodkin@synopsys.com> References: <1459164999-11850-1-git-send-email-abrodkin@synopsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1459164999-11850-1-git-send-email-abrodkin@synopsys.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane.org@lists.infradead.org To: dri-devel@lists.freedesktop.org Cc: Mark Rutland , devicetree@vger.kernel.org, Pawel Moll , Ian Campbell , Alexey Brodkin , linux-kernel@vger.kernel.org, Rob Herring , Kumar Gala , linux-snps-arc@lists.infradead.org List-Id: devicetree@vger.kernel.org This add DT bindings documentation for ARC PGU display controller. Signed-off-by: Alexey Brodkin Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala Cc: devicetree@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Acked-by: Rob Herring --- Changes v4 -> v5: (addressing Rob's comment) * Added Rob's acked-by * Remove "encoder-slave" from the example as well. Now only "pgu" node is mentioned in the example. Changes v3 -> v4: (addressing Rob's comments) * Removed "encoder-slave" from required properties * Removed "0x" from node names Changes v2 -> v3: * Reverted back to initial larger version of example with minor fixes (thanks Rob for spotting those). Changes v1 -> v2: * Removed everything except PGU node itself. .../devicetree/bindings/display/snps,arcpgu.txt | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/snps,arcpgu.txt diff --git a/Documentation/devicetree/bindings/display/snps,arcpgu.txt b/Documentation/devicetree/bindings/display/snps,arcpgu.txt new file mode 100644 index 0000000..c5c7dfd --- /dev/null +++ b/Documentation/devicetree/bindings/display/snps,arcpgu.txt @@ -0,0 +1,35 @@ +ARC PGU + +This is a display controller found on several development boards produced +by Synopsys. The ARC PGU is an RGB streamer that reads the data from a +framebuffer and sends it to a single digital encoder (usually HDMI). + +Required properties: + - compatible: "snps,arcpgu" + - reg: Physical base address and length of the controller's registers. + - clocks: A list of phandle + clock-specifier pairs, one for each + entry in 'clock-names'. + - clock-names: A list of clock names. For ARC PGU it should contain: + - "pxlclk" for the clock feeding the output PLL of the controller. + +Required sub-nodes: + - port: The PGU connection to an encoder chip. + +Example: + +/ { + ... + + pgu@XXXXXXXX { + compatible = "snps,arcpgu"; + reg = <0xXXXXXXXX 0x400>; + clocks = <&clock_node>; + clock-names = "pxlclk"; + + port { + pgu_output: endpoint { + remote-endpoint = <&hdmi_enc_input>; + }; + }; + }; +}; -- 2.5.0