From patchwork Sat Mar 4 17:28:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Johansen X-Patchwork-Id: 658861 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3837FC678D5 for ; Sat, 4 Mar 2023 17:28:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229447AbjCDR2t (ORCPT ); Sat, 4 Mar 2023 12:28:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41240 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229445AbjCDR2s (ORCPT ); Sat, 4 Mar 2023 12:28:48 -0500 Received: from mail.manjaro.org (mail.manjaro.org [IPv6:2a01:4f8:c0c:51f3::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C006412588 for ; Sat, 4 Mar 2023 09:28:47 -0800 (PST) From: Dan Johansen DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=manjaro.org; s=2021; t=1677950925; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=x87z+vjCvrBlBBbKs7GWBh8GXGMnyIrhP7gvLq53N5c=; b=dx/PzP5n1HrHOJJqYqhuWpAzTF4mehyP1CzjU7+1S05mBIs6Q3dw7YLOk6KvLm9WFYI3es eU5Mneg8PKsvyKylox8dSspKfG83XR8Xw8gBBM6np6ddLwAgEx7E7wcq4iuA+nPercdpgM 2C30Y4sUooHYwRqa+lWIZ2WQN/obkpYWdVeZ1QW+CzrA44pEWjZFTz+m0cs6Kxeg4bN73A ddEXdjTzKkumgYUy6uEHlmaZRPrvcdPhTo7Z18VfoCTLahbPz1U7TRYVAbG3QOwChgBfzc ooOCXH9N8YPFbzXbARNy94t+gmSh5hkeV83Q15y5XpOeEgh7M/YJrrF6rrtawg== To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, heiko@sntech.de Cc: devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org, Dan Johansen , Dragan Simic , JR Gonzalez Subject: [PATCH] arm64: dts: rockchip: Lower SD card speed on Pinebook Pro Date: Sat, 4 Mar 2023 18:28:38 +0100 Message-Id: <20230304172838.38059-1-strit@manjaro.org> MIME-Version: 1.0 Authentication-Results: ORIGINATING; auth=pass smtp.auth=strit@manjaro.org smtp.mailfrom=strit@manjaro.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org MicroSD card slot in the Pinebook Pro is located on a separate daughterboard that's connected to the mainboard using a rather long flat cable. The resulting signal degradation causes many perfectly fine microSD cards not to work in the Pinebook Pro, which is a common source of frustration among the owners. Changing the mode and lowering the speed reportedly fixes this issue and makes many microSD cards work as expected. Co-authored-by: Dragan Simic Tested-by: JR Gonzalez Signed-off-by: Dan Johansen --- arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts index 194e48c755f6..54bb0398128f 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts @@ -943,7 +943,7 @@ &sdmmc { disable-wp; pinctrl-names = "default"; pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_bus4>; - sd-uhs-sdr104; + sd-uhs-sdr50; vmmc-supply = <&vcc3v0_sd>; vqmmc-supply = <&vcc_sdio>; status = "okay";