From patchwork Tue Aug 28 06:28:03 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leilk Liu X-Patchwork-Id: 10577897 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AB74B175A for ; Tue, 28 Aug 2018 06:29:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9DB512959F for ; Tue, 28 Aug 2018 06:29:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 908D9295B1; Tue, 28 Aug 2018 06:29:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 385372959F for ; Tue, 28 Aug 2018 06:29:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726994AbeH1KTK (ORCPT ); Tue, 28 Aug 2018 06:19:10 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:38399 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726979AbeH1KTJ (ORCPT ); Tue, 28 Aug 2018 06:19:09 -0400 X-UUID: 925edb777be34548b88cb7a9f5e19138-20180828 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 596432030; Tue, 28 Aug 2018 14:28:52 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Tue, 28 Aug 2018 14:28:49 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Tue, 28 Aug 2018 14:28:48 +0800 From: Leilk Liu To: Mark Brown CC: Mark Rutland , Matthias Brugger , Sascha Hauer , , , , , , , , Leilk Liu Subject: [PATCH 1/3] spis: mediatek: add bindings for Mediatek MT2712 soc platform Date: Tue, 28 Aug 2018 14:28:03 +0800 Message-ID: <1535437685-30230-2-git-send-email-leilk.liu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1535437685-30230-1-git-send-email-leilk.liu@mediatek.com> References: <1535437685-30230-1-git-send-email-leilk.liu@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a DT binding documentation for the MT2712 soc. Signed-off-by: Leilk Liu --- .../devicetree/bindings/spi/spi-slave-mt27xx.txt | 39 ++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt diff --git a/Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt b/Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt new file mode 100644 index 0000000..dcb8934 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt @@ -0,0 +1,39 @@ +Binding for MTK SPI Slave controller + +Required properties: +- compatible: should be one of the following. + - mediatek,mt2712-spi: for mt2712 platforms + +- reg: Address and length of the register set for the device + +- interrupts: Should contain spi interrupt + +- clocks: phandles to input clocks. + The first should be one of the following. It's PLL. + - <&topckgen CLK_TOP_UNIVPLL1_D2>: specify parent clock 312MHZ. + It's the default one. + - <&topckgen CLK_TOP_UNIVPLL1_D4>: specify parent clock 156MHZ. + - <&topckgen CLK_TOP_UNIVPLL2_D4>: specify parent clock 104MHZ. + - <&topckgen CLK_TOP_UNIVPLL1_D8>: specify parent clock 78MHZ. + The second should be <&topckgen CLK_TOP_SPISLV_SEL>. It's clock mux. + The third is <&infracfg CLK_INFRA_AO_SPI1>. It's clock gate. + +- clock-names: shall be "parent-clk" for the parent clock, "sel-clk" for the + muxes clock, and "spi-clk" for the clock gate. + +- spi-slave: Empty property indicating the SPI controller is used in slave mode. + +Example: + +- SoC Specific Portion: +spis: spi@10013000 { + compatible = "mediatek,mt2712-spi-slave"; + reg = <0 0x10013000 0 0x100>; + interrupts = ; + clocks = <&topckgen CLK_TOP_UNIVPLL1_D2>, + <&topckgen CLK_TOP_SPISLV_SEL>, + <&infracfg CLK_INFRA_AO_SPI1>; + clock-names = "parent-clk", "sel-clk", "spi-clk"; + spi-slave; + status = "disabled"; +};