From mboxrd@z Thu Jan 1 00:00:00 1970 From: Evan Green Subject: [PATCH v4 3/8] dt-bindings: phy: qcom-ufs: Add resets property Date: Wed, 13 Feb 2019 15:25:21 -0800 Message-ID: <20190213232526.26995-4-evgreen@chromium.org> References: <20190213232526.26995-1-evgreen@chromium.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190213232526.26995-1-evgreen@chromium.org> Sender: linux-kernel-owner@vger.kernel.org To: Andy Gross , Kishon Vijay Abraham I Cc: Stephen Boyd , Marc Gonzalez , Can Guo , Vivek Gautam , Douglas Anderson , Asutosh Das , Evan Green , Rob Herring , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring , Mark Rutland List-Id: devicetree@vger.kernel.org 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 Reviewed-by: Rob Herring Reviewed-by: Stephen Boyd --- Changes in v4: None Changes in v3: None Changes in v2: - Added resets to example (Stephen). Documentation/devicetree/bindings/ufs/ufs-qcom.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/ufs/ufs-qcom.txt b/Documentation/devicetree/bindings/ufs/ufs-qcom.txt index 21d9a93db2e9..fd59f93e9556 100644 --- a/Documentation/devicetree/bindings/ufs/ufs-qcom.txt +++ b/Documentation/devicetree/bindings/ufs/ufs-qcom.txt @@ -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"; -- 2.20.1