From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932763AbbJHNb3 (ORCPT ); Thu, 8 Oct 2015 09:31:29 -0400 Received: from bhuna.collabora.co.uk ([93.93.135.160]:60391 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757515AbbJHNbY (ORCPT ); Thu, 8 Oct 2015 09:31:24 -0400 From: Sjoerd Simons To: linux-rockchip@lists.infradead.org Cc: Jaroslav Kysela , devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Heiko Stuebner , Mark Brown , linux-kernel@vger.kernel.org, Kumar Gala , Ian Campbell , Takashi Iwai , Liam Girdwood , Sjoerd Simons , Pawel Moll , Rob Herring , Mark Rutland , Russell King , linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 1/8] ASoC: dt-bindings: add rockchip tranceiver bindings Date: Thu, 8 Oct 2015 15:31:12 +0200 Message-Id: <1444311079-2892-2-git-send-email-sjoerd.simons@collabora.co.uk> X-Mailer: git-send-email 2.6.1 In-Reply-To: <1444311079-2892-1-git-send-email-sjoerd.simons@collabora.co.uk> References: <1444311079-2892-1-git-send-email-sjoerd.simons@collabora.co.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add devicetree bindings for the spdif tranceiver found on found on rk3066, rk3188 and rk3288 SoCs Signed-off-by: Sjoerd Simons --- Changes in v4: - Require rockchip,grf on RK3288 as the 8 channel solution has to be selected on that SoC - Make the compatibility string one of a known list rather then requiring a precise list of options. - Change the clock names to hclk and mclk instead of spdif_hclk and spdif_mclk to better match the implementation and data sheets. Changes in v3: None Changes in v2: None .../devicetree/bindings/sound/rockchip-spdif.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/rockchip-spdif.txt diff --git a/Documentation/devicetree/bindings/sound/rockchip-spdif.txt b/Documentation/devicetree/bindings/sound/rockchip-spdif.txt new file mode 100644 index 0000000..33dd82c --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rockchip-spdif.txt @@ -0,0 +1,44 @@ +* Rockchip SPDIF transceiver + +The S/PDIF audio block is a stereo transceiver that allows the +processor to receive and transmit digital audio via an coaxial cable or +a fibre cable. + +Required properties: + +- compatible: should be one of the following: + - "rockchip,rk3288-spdif", "rockchip,rk3188-spdif" or + "rockchip,rk3066-spdif" +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: should contain the SPDIF interrupt. +- #address-cells: should be 1. +- #size-cells: should be 0. +- dmas: DMA specifiers for tx dma. See the DMA client binding, + Documentation/devicetree/bindings/dma/dma.txt +- dma-names: should be "tx" +- clocks: a list of phandle + clock-specifier pairs, one for each entry + in clock-names. +- clock-names: should contain following: + - "hclk": clock for SPDIF controller + - "mclk" : clock for SPDIF bus + +Required properties on RK3288: + - rockchip,grf: the phandle of the syscon node for the general register + file (GRF) + +Example for the rk3188 SPDIF controller: + +spdif: spdif@0x1011e000 { + compatible = "rockchip,rk3188-spdif", "rockchip,rk3066-spdif"; + reg = <0x1011e000 0x2000>; + interrupts = ; + #address-cells = <1>; + #size-cells = <0>; + dmas = <&dmac1_s 8>; + dma-names = "tx"; + clock-names = "hclk", "mclk"; + clocks = <&cru HCLK_SPDIF>, <&cru SCLK_SPDIF>; + status = "disabled"; + #sound-dai-cells = <0>; +}; -- 2.6.1