From mboxrd@z Thu Jan 1 00:00:00 1970 From: Franklin S Cooper Jr Subject: [PATCH 1/3] dt-bindings: net: c_can: Update binding for clock and power-domains property Date: Wed, 2 Aug 2017 15:18:20 -0500 Message-ID: <20170802201822.11532-2-fcooper@ti.com> References: <20170802201822.11532-1-fcooper@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20170802201822.11532-1-fcooper@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: wg@grandegger.com, mkl@pengutronix.de, robh+dt@kernel.org, ssantosh@kernel.org, linux@armlinux.org.uk, linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Franklin S Cooper Jr List-Id: devicetree@vger.kernel.org CAN driver uses the clk_get_rate call to determine the frequency of the functional clock. OMAP based SoCs do not require the clock property since hwmod already handles creating a "fck" clock thats accessible to drivers. However, this isn't the case for 66AK2G which makes the clocks property require for that SoC. 66AK2G requires a new property. Therefore, update the binding to also make this property requirement clear. Also clarify that for OMAP based SoCs ti,hwmod is a required property. Signed-off-by: Franklin S Cooper Jr --- Documentation/devicetree/bindings/net/can/c_can.txt | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/can/c_can.txt b/Documentation/devicetree/bindings/net/can/c_can.txt index 5a1d8b0..2d50425 100644 --- a/Documentation/devicetree/bindings/net/can/c_can.txt +++ b/Documentation/devicetree/bindings/net/can/c_can.txt @@ -11,9 +11,20 @@ Required properties: - interrupts : property with a value describing the interrupt number -Optional properties: +The following are mandatory properties for DRA7x, AM33xx and AM43xx SoCs only: - ti,hwmods : Must be "d_can" or "c_can", n being the instance number + +The following are mandatory properties for Keystone 2 66AK2G SoCs only: +- power-domains : Should contain a phandle to a PM domain provider node + and an args specifier containing the DCAN device id + value. This property is as per the binding, + Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt +- clocks : CAN functional clock phandle. This property is as per the + binding, + Documentation/devicetree/bindings/clock/ti,sci-clk.txt + +Optional properties: - syscon-raminit : Handle to system control region that contains the RAMINIT register, register offset to the RAMINIT register and the CAN instance number (0 offset). -- 2.9.4.dirty