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dt-bindings: phy: qcom-ufs: Add resets property

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Add a resets property to the PHY that represents the PHY reset
register in the UFS controller itself. This better describes the
complete specification of the PHY, and allows the PHY to perform
its initialization in a single function, rather than relying on
back-channel sequencing of initialization through the PHY framework.

Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Evan Green 2019-03-21 10:17:55 -07:00 committed by Kishon Vijay Abraham I
parent 95cee0b4e3
commit 70b894deb7
1 changed files with 4 additions and 1 deletions
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5
Documentation/devicetree/bindings/ufs/ufs-qcom.txt
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@ -29,6 +29,7 @@ Optional properties:
- vdda-pll-max-microamp : specifies max. load that can be drawn from pll supply
- vddp-ref-clk-supply : phandle to UFS device ref_clk pad power supply
- vddp-ref-clk-max-microamp : specifies max. load that can be drawn from this supply
- resets : specifies the PHY reset in the UFS controller
Example:
@ -51,9 +52,11 @@ Example:
<&clock_gcc clk_ufs_phy_ldo>,
<&clock_gcc clk_gcc_ufs_tx_cfg_clk>,
<&clock_gcc clk_gcc_ufs_rx_cfg_clk>;
resets = <&ufshc 0>;
};
ufshc@fc598000 {
ufshc: ufshc@fc598000 {
#reset-cells = <1>;
...
phys = <&ufsphy1>;
phy-names = "ufsphy";