linux-kernel - [PATCH v2] ARM: dts: imx: Set default tuning step for imx7d usdhc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 23 Jul 2023 10:20:50 +0800
From:   Xiaolei Wang <xiaolei.wang@...driver.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        festevam@...il.com, linux-imx@....com, richardcochran@...il.com
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] ARM: dts: imx: Set default tuning step for imx7d usdhc

If the tuning step is not set, the tuning step is set to 1.
For some sd cards, the following Tuning timeout will occur,
so set the default tuning step. This refers to the NXP vendor's
commit below:

https://github.com/nxp-imx/linux-imx/blob/lf-6.1.y/
arch/arm/boot/dts/imx7s.dtsi#L1216-L1217

Fixes: 1e336aa0c025 ("mmc: sdhci-esdhc-imx: correct the tuning start tap and step setting")
Signed-off-by: Xiaolei Wang <xiaolei.wang@...driver.com>

v2:
  * Refer to https://github.com/nxp-imx/linux-imx/blob/lf-6.1.y/arch/arm/boot/dts/imx7s.dtsi#L1216-L1217
    and add the following attributes for all usdhc of imx7:
      fsl,tuning-step = <2>;
      fsl,tuning-start-tap = <20>;

---
 arch/arm/boot/dts/nxp/imx/imx7s.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/nxp/imx/imx7s.dtsi b/arch/arm/boot/dts/nxp/imx/imx7s.dtsi
index 54026c2c93fa..6ffb428dc939 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7s.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7s.dtsi
@@ -1184,6 +1184,8 @@ usdhc1: mmc@...40000 {
 					<&clks IMX7D_USDHC1_ROOT_CLK>;
 				clock-names = "ipg", "ahb", "per";
 				bus-width = <4>;
+				fsl,tuning-step = <2>;
+				fsl,tuning-start-tap = <20>;
 				status = "disabled";
 			};
 
@@ -1196,6 +1198,8 @@ usdhc2: mmc@...50000 {
 					<&clks IMX7D_USDHC2_ROOT_CLK>;
 				clock-names = "ipg", "ahb", "per";
 				bus-width = <4>;
+				fsl,tuning-step = <2>;
+				fsl,tuning-start-tap = <20>;
 				status = "disabled";
 			};
 
@@ -1208,6 +1212,8 @@ usdhc3: mmc@...60000 {
 					<&clks IMX7D_USDHC3_ROOT_CLK>;
 				clock-names = "ipg", "ahb", "per";
 				bus-width = <4>;
+				fsl,tuning-step = <2>;
+				fsl,tuning-start-tap = <20>;
 				status = "disabled";
 			};
 
-- 
2.25.1