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Message-Id: <20221110150035.2824580-5-adeep@lexina.in>
Date: Thu, 10 Nov 2022 18:00:35 +0300
From: Vyacheslav Bocharov <adeep@...ina.in>
To: linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] arm64: dts: docs: Update mmc meson-gx documentation for new config option amlogic,mmc-phase
- amlogic,mmc-phases: 3-element array of clock phases for core, tx, rx
clock with values:
0: CLK_PHASE_0 - 0 phase
1: CLK_PHASE_90 - 90 phase
2: CLK_PHASE_180 - 180 phase
3: CLK_PHASE_270 - 270 phase
By default driver use <CLK_PHASE_180 CLK_PHASE_0 CLK_PHASE_0> value.
Signed-off-by: Vyacheslav Bocharov <adeep@...ina.in>
diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt
index ccc5358db131..98c89c5b3455 100644
--- a/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt
+++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-gx.txt
@@ -25,6 +25,12 @@ Required properties:
Optional properties:
- amlogic,dram-access-quirk: set when controller's internal DMA engine cannot access the
DRAM memory, like on the G12A dedicated SDIO controller.
+- amlogic,mmc-phases: 3-element array of clock phases for core, tx, rx clock with values:
+ 0: CLK_PHASE_0 - 0 phase
+ 1: CLK_PHASE_90 - 90 phase
+ 2: CLK_PHASE_180 - 180 phase
+ 3: CLK_PHASE_270 - 270 phase
+ By default driver use <CLK_PHASE_180 CLK_PHASE_0 CLK_PHASE_0> value.
Example:
@@ -36,4 +42,5 @@ Example:
clock-names = "core", "clkin0", "clkin1";
pinctrl-0 = <&emmc_pins>;
resets = <&reset RESET_SD_EMMC_A>;
+ amlogic,mmc-phases = <CLK_PHASE_180 CLK_PHASE_0 CLK_PHASE_0>;
};
--
2.30.2
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