Commit 557ed5f0 authored by Pradeep P V K's avatar Pradeep P V K Committed by Ulf Hansson

dt-bindings: mmc: sdhci-msm: Add interconnect BW scaling strings

Add interconnect bandwidth scaling supported strings for qcom-sdhci
controller.
Signed-off-by: default avatarPradeep P V K <ppvk@codeaurora.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1591691846-7578-3-git-send-email-ppvk@codeaurora.orgSigned-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent b4fc8278
...@@ -54,6 +54,21 @@ Required properties: ...@@ -54,6 +54,21 @@ Required properties:
- qcom,dll-config: Chipset and Platform specific value. Use this field to - qcom,dll-config: Chipset and Platform specific value. Use this field to
specify the DLL_CONFIG register value as per Hardware Programming Guide. specify the DLL_CONFIG register value as per Hardware Programming Guide.
Optional Properties:
* Following bus parameters are required for interconnect bandwidth scaling:
- interconnects: Pairs of phandles and interconnect provider specifier
to denote the edge source and destination ports of
the interconnect path.
- interconnect-names: For sdhc, we have two main paths.
1. Data path : sdhc to ddr
2. Config path : cpu to sdhc
For Data interconnect path the name supposed to be
is "sdhc-ddr" and for config interconnect path it is
"cpu-sdhc".
Please refer to Documentation/devicetree/bindings/
interconnect/ for more details.
Example: Example:
sdhc_1: sdhci@f9824900 { sdhc_1: sdhci@f9824900 {
...@@ -71,6 +86,9 @@ Example: ...@@ -71,6 +86,9 @@ Example:
clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>; clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>;
clock-names = "core", "iface"; clock-names = "core", "iface";
interconnects = <&qnoc MASTER_SDCC_ID &qnoc SLAVE_DDR_ID>,
<&qnoc MASTER_CPU_ID &qnoc SLAVE_SDCC_ID>;
interconnect-names = "sdhc-ddr","cpu-sdhc";
qcom,dll-config = <0x000f642c>; qcom,dll-config = <0x000f642c>;
qcom,ddr-config = <0x80040868>; qcom,ddr-config = <0x80040868>;
......
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