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| author |   Ulf Hansson <ulf.hansson@linaro.org> | 2014-03-19 12:55:35 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-05-12 12:52:37 +0200 |
| commit | dc03294ac0b71ab110ad503ca18fc50f0eb15576 (patch) | |
| tree | a5c2c3b7bf13a31bd4d9d38694bcaf8256dff077 /Documentation/devicetree/bindings/mmc/mmci.txt | |
| parent | mmc: mmci: Convert to devm functions (diff) | |
| download | linux-dev-dc03294ac0b71ab110ad503ca18fc50f0eb15576.tar.xz linux-dev-dc03294ac0b71ab110ad503ca18fc50f0eb15576.zip | |
mmc: mmci: Update DT documentation
Document how to configure the regulator supplies and add an example of
a typical mmci DT node.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/mmc/mmci.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mmci.txt | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmci.txt b/Documentation/devicetree/bindings/mmc/mmci.txt index 2b584cae352a..ff233d1eb190 100644 --- a/Documentation/devicetree/bindings/mmc/mmci.txt +++ b/Documentation/devicetree/bindings/mmc/mmci.txt @@ -8,8 +8,41 @@ by mmc.txt and the properties used by the mmci driver. Required properties: - compatible : contains "arm,pl18x", "arm,primecell". -- arm,primecell-periphid : contains the PrimeCell Peripheral ID. +- vmmc-supply : phandle to the regulator device tree node, mentioned + as the VCC/VDD supply in the eMMC/SD specs. Optional properties: -- mmc-cap-mmc-highspeed : indicates whether MMC is high speed capable -- mmc-cap-sd-highspeed : indicates whether SD is high speed capable +- arm,primecell-periphid : contains the PrimeCell Peripheral ID, it overrides + the ID provided by the HW +- mmc-cap-mmc-highspeed : indicates whether MMC is high speed capable. +- mmc-cap-sd-highspeed : indicates whether SD is high speed capable. +- vqmmc-supply : phandle to the regulator device tree node, mentioned + as the VCCQ/VDD_IO supply in the eMMC/SD specs. + +Example: + +sdi0_per1@80126000 { + compatible = "arm,pl18x", "arm,primecell"; + reg = <0x80126000 0x1000>; + interrupts = <0 60 IRQ_TYPE_LEVEL_HIGH>; + + dmas = <&dma 29 0 0x2>, /* Logical - DevToMem */ + <&dma 29 0 0x0>; /* Logical - MemToDev */ + dma-names = "rx", "tx"; + + clocks = <&prcc_kclk 1 5>, <&prcc_pclk 1 5>; + clock-names = "sdi", "apb_pclk"; + + max-frequency = <100000000>; + bus-width = <4>; + mmc-cap-sd-highspeed; + mmc-cap-mmc-highspeed; + cd-gpios = <&gpio2 31 0x4>; // 95 + + vmmc-supply = <&ab8500_ldo_aux3_reg>; + vqmmc-supply = <&vmmci>; + + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&sdi0_default_mode>; + pinctrl-1 = <&sdi0_sleep_mode>; +}; |