Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a457b709 authored by Faiz Abbas's avatar Faiz Abbas Committed by Ulf Hansson
Browse files

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: default avatarFaiz Abbas <faiz_abbas@ti.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent ef4a8d90

Documentation/devicetree/bindings/mmc/sdhci-am654.txt

+8 −1
Original line number Diff line number Diff line
@@ -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: