lkml.org 
[lkml]   [2020]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 2/8] dt-bindings: mmc: Add information for DLL register properties
Date
Add information regarding DLL register properties for getting board
specific configurations. These DLL register settings may vary from
board to board.

Signed-off-by: Sarthak Garg <sartgarg@codeaurora.org>
---
Documentation/devicetree/bindings/mmc/sdhci-msm.txt | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
index 481f692f..b8e1d2b 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
@@ -47,6 +47,13 @@ Required properties:
"cal" - reference clock for RCLK delay calibration (optional)
"sleep" - sleep clock for RCLK delay calibration (optional)

+- qcom,ddr-config: Certain chipsets and platforms require particular settings
+ for the DDR_CONFIG register. Use this field to specify the register
+ value as per the Hardware Programming Guide.
+
+- qcom,dll-config: Chipset and Platform specific value. Use this field to
+ specify the DLL_CONFIG register value as per Hardware Programming Guide.
+
Example:

sdhc_1: sdhci@f9824900 {
@@ -64,6 +71,9 @@ Example:

clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>;
clock-names = "core", "iface";
+
+ qcom,dll-config = <0x000f642c>;
+ qcom,ddr-config = <0x80040868>;
};

sdhc_2: sdhci@f98a4900 {
@@ -81,4 +91,7 @@ Example:

clocks = <&gcc GCC_SDCC2_APPS_CLK>, <&gcc GCC_SDCC2_AHB_CLK>;
clock-names = "core", "iface";
+
+ qcom,dll-config = <0x0007642c>;
+ qcom,ddr-config = <0x80040868>;
};
--
2.7.4
\
 
 \ /
  Last update: 2020-05-22 11:37    [W:0.122 / U:13.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site