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| author | Faiz Abbas <faiz_abbas@ti.com> | 2019-06-04 09:09:11 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-06-17 13:02:58 +0300 |
| commit | a457b70904bbf9a96d39fa01ce4d04a1d10c5e44 (patch) | |
| tree | 21bd2aa6755e526e1abb06387c0b1c1167c61027 /Documentation/devicetree/bindings/mmc | |
| parent | ef4a8d90b7f495a5b32375e33d5d2fd763a6a18c (diff) | |
| download | linux-a457b70904bbf9a96d39fa01ce4d04a1d10c5e44.tar.xz | |
dt-bindings: mmc: sdhci-am654: Document bindings for the host controllers on TI's J721E devices.
Add binding documentation for mmc host controllers present on TI's J721E
SOC. The 4 bit IP on J721E doesn't have a phy DLL so make DLL related
properties as optional for that compatible. Also add an optional
strobe-sel property used for HS400 speed mode.
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/mmc')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/sdhci-am654.txt | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-am654.txt b/Documentation/devicetree/bindings/mmc/sdhci-am654.txt index 15dbbbace27e..50e87df47971 100644 --- a/Documentation/devicetree/bindings/mmc/sdhci-am654.txt +++ b/Documentation/devicetree/bindings/mmc/sdhci-am654.txt @@ -8,7 +8,10 @@ Only deviations are documented here. [3] Documentation/devicetree/bindings/interrupt-controller/interrupts.txt Required Properties: - - compatible: should be "ti,am654-sdhci-5.1" + - compatible: should be one of: + "ti,am654-sdhci-5.1": SDHCI on AM654 device. + "ti,j721e-sdhci-8bit": 8 bit SDHCI on J721E device. + "ti,j721e-sdhci-4bit": 4 bit SDHCI on J721E device. - reg: Must be two entries. - The first should be the sdhci register space - The second should the subsystem/phy register space @@ -16,9 +19,13 @@ Required Properties: - clock-names: Tuple including "clk_xin" and "clk_ahb" - interrupts: Interrupt specifiers - ti,otap-del-sel: Output Tap Delay select + +Optional Properties (Required for ti,am654-sdhci-5.1 and ti,j721e-sdhci-8bit): - ti,trm-icp: DLL trim select - ti,driver-strength-ohm: driver strength in ohms. Valid values are 33, 40, 50, 66 and 100 ohms. +Optional Properties: + - ti,strobe-sel: strobe select delay for HS400 speed mode. Default value: 0x0. Example: |