From patchwork Thu May 6 10:03:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Lee X-Patchwork-Id: 1474885 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4FbTjc32D2z9sT6 for ; Thu, 6 May 2021 20:05:40 +1000 (AEST) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4FbTjc1nYMz303y for ; Thu, 6 May 2021 20:05:40 +1000 (AEST) X-Original-To: openbmc@lists.ozlabs.org Delivered-To: openbmc@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=fail (SPF fail - not authorized) smtp.mailfrom=aspeedtech.com (client-ip=211.20.114.71; helo=twspam01.aspeedtech.com; envelope-from=steven_lee@aspeedtech.com; receiver=) Received: from twspam01.aspeedtech.com (twspam01.aspeedtech.com [211.20.114.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4FbTjG6ZQMz2ysr; Thu, 6 May 2021 20:05:20 +1000 (AEST) Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 1469pPCd024629; Thu, 6 May 2021 17:51:25 +0800 (GMT-8) (envelope-from steven_lee@aspeedtech.com) Received: from localhost.localdomain (192.168.100.253) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 6 May 2021 18:03:13 +0800 From: Steven Lee To: Andrew Jeffery , Ulf Hansson , Rob Herring , Joel Stanley , "Adrian Hunter" , Philipp Zabel , Ryan Chen , "moderated list:ASPEED SD/MMC DRIVER" , "moderated list:ASPEED SD/MMC DRIVER" , "open list:ASPEED SD/MMC DRIVER" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "moderated list:ARM/ASPEED MACHINE SUPPORT" , open list Subject: [PATCH v3 1/5] dt-bindings: mmc: sdhci-of-aspeed: Add an example for AST2600-A2 EVB Date: Thu, 6 May 2021 18:03:08 +0800 Message-ID: <20210506100312.1638-2-steven_lee@aspeedtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210506100312.1638-1-steven_lee@aspeedtech.com> References: <20210506100312.1638-1-steven_lee@aspeedtech.com> MIME-Version: 1.0 X-Originating-IP: [192.168.100.253] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 1469pPCd024629 X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ryan_chen@aspeedtech.com, chin-ting_kuo@aspeedtech.com, steven_lee@aspeedtech.com, Hongweiz@ami.com Errors-To: openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "openbmc" AST2600-A2 EVB has the reference design for enabling SD bus power and toggling SD bus signal voltage by GPIO pins. In the reference design, GPIOV0 of AST2600-A2 EVB is connected to power load switch that providing 3.3v to SD1 bus vdd. GPIOV1 is connected to a 1.8v and a 3.3v power load switch that providing signal voltage to SD1 bus. If GPIOV0 is active high, SD1 bus is enabled. Otherwise, SD1 bus is disabled. If GPIOV1 is active high, 3.3v power load switch is enabled, SD1 signal voltage is 3.3v. Otherwise, 1.8v power load switch will be enabled, SD1 signal voltage becomes 1.8v. AST2600-A2 EVB also support toggling signal voltage for SD2 bus. The design is the same as SD1 bus. It uses GPIOV2 as power-gpio and GPIOV3 as power-switch-gpio. Signed-off-by: Steven Lee --- .../devicetree/bindings/mmc/aspeed,sdhci.yaml | 101 +++++++++++++++++- 1 file changed, 97 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml b/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml index 987b287f3bff..de7e61b3d37a 100644 --- a/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml +++ b/Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml @@ -45,10 +45,16 @@ patternProperties: properties: compatible: - enum: - - aspeed,ast2400-sdhci - - aspeed,ast2500-sdhci - - aspeed,ast2600-sdhci + oneOf: + - items: + - enum: + - aspeed,ast2400-sdhci + - aspeed,ast2500-sdhci + - aspeed,ast2600-sdhci + - items: + - enum: + - aspeed,ast2600-sdhci + - const: sdhci reg: maxItems: 1 description: The SDHCI registers @@ -104,3 +110,90 @@ examples: clocks = <&syscon ASPEED_CLK_SDIO>; }; }; + + - | + #include + #include + #include + #include + vcc_sdhci0: regulator-vcc-sdhci0 { + compatible = "regulator-fixed"; + regulator-name = "SDHCI0 Vcc"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpios = <&gpio0 168 + GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + + vccq_sdhci0: regulator-vccq-sdhci0 { + compatible = "regulator-gpio"; + + regulator-name = "SDHCI0 VccQ"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + gpios = <&gpio0 169 + GPIO_ACTIVE_HIGH>; + gpios-states = <1>; + states = <3300000 1>, + <1800000 0>; + }; + + vcc_sdhci1: regulator-vcc-sdhci1 { + compatible = "regulator-fixed"; + + regulator-name = "SDHCI1 Vcc"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpios = <&gpio0 170 + GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + + vccq_sdhci1: regulator-vccq-sdhci1 { + compatible = "regulator-gpio"; + + regulator-name = "SDHCI1 VccQ"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + gpios = <&gpio0 171 + GPIO_ACTIVE_HIGH>; + gpios-states = <1>; + states = <3300000 1>, + <1800000 0>; + }; + + sdc@1e740000 { + compatible = "aspeed,ast2600-sd-controller"; + reg = <0x1e740000 0x100>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x1e740000 0x20000>; + clocks = <&syscon ASPEED_CLK_GATE_SDCLK>; + + sdhci@1e740100 { + compatible = "aspeed,ast2600-sdhci","sdhci"; + reg = <0x100 0x100>; + interrupts = ; + sdhci,auto-cmd12; + clocks = <&syscon ASPEED_CLK_SDIO>; + vmmc-supply = <&vcc_sdhci0>; + vqmmc-supply = <&vccq_sdhci0>; + sd-uhs-sdr104; + clk-phase-uhs-sdr104 = <180>, <180>; + }; + + sdhci@1e740200 { + compatible = "aspeed,ast2600-sdhci","sdhci"; + reg = <0x200 0x100>; + interrupts = ; + sdhci,auto-cmd12; + clocks = <&syscon ASPEED_CLK_SDIO>; + vmmc-supply = <&vcc_sdhci1>; + vqmmc-supply = <&vccq_sdhci1>; + sd-uhs-sdr104; + clk-phase-uhs-sdr104 = <0>, <0>; + }; + }; + +...