From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- .../devicetree/bindings/mmc/sdhci-atmel.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-atmel.txt (limited to 'Documentation/devicetree/bindings/mmc/sdhci-atmel.txt') diff --git a/Documentation/devicetree/bindings/mmc/sdhci-atmel.txt b/Documentation/devicetree/bindings/mmc/sdhci-atmel.txt new file mode 100644 index 000000000..69edfd4d3 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/sdhci-atmel.txt @@ -0,0 +1,33 @@ +* Atmel SDHCI controller + +This file documents the differences between the core properties in +Documentation/devicetree/bindings/mmc/mmc.txt and the properties used by the +sdhci-of-at91 driver. + +Required properties: +- compatible: Must be "atmel,sama5d2-sdhci" or "microchip,sam9x60-sdhci". +- clocks: Phandlers to the clocks. +- clock-names: Must be "hclock", "multclk", "baseclk" for + "atmel,sama5d2-sdhci". + Must be "hclock", "multclk" for "microchip,sam9x60-sdhci". + +Optional properties: +- assigned-clocks: The same with "multclk". +- assigned-clock-rates The rate of "multclk" in order to not rely on the + gck configuration set by previous components. +- microchip,sdcal-inverted: when present, polarity on the SDCAL SoC pin is + inverted. The default polarity for this signal is described in the datasheet. + For instance on SAMA5D2, the pin is usually tied to the GND with a resistor + and a capacitor (see "SDMMC I/O Calibration" chapter). + +Example: + +mmc0: sdio-host@a0000000 { + compatible = "atmel,sama5d2-sdhci"; + reg = <0xa0000000 0x300>; + interrupts = <31 IRQ_TYPE_LEVEL_HIGH 0>; + clocks = <&sdmmc0_hclk>, <&sdmmc0_gclk>, <&main>; + clock-names = "hclock", "multclk", "baseclk"; + assigned-clocks = <&sdmmc0_gclk>; + assigned-clock-rates = <480000000>; +}; -- cgit v1.2.3