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[73.37.219.234]) by smtp.gmail.com with ESMTPSA id q19sm12207278ilc.70.2021.06.30.10.30.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Jun 2021 10:30:54 -0700 (PDT) From: Adam Ford To: linux-usb@vger.kernel.org Cc: aford@beaconembedded.com, Adam Ford , Greg Kroah-Hartman , Rob Herring , Geert Uytterhoeven , Magnus Damm , Yoshihiro Shimoda , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH 2/3] usb: renesas_usbhs: Enable support for more than two clks Date: Wed, 30 Jun 2021 12:30:41 -0500 Message-Id: <20210630173042.186394-2-aford173@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210630173042.186394-1-aford173@gmail.com> References: <20210630173042.186394-1-aford173@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The RZ/G2 boards expect there to be an external clock reference for USBHS controller, but this could be set by a programmable clock. For those devices using a programmable clock, there need to be two additional clocks beyond the internal reference clocks: rcar-usb2-clock-sel to specify we using an external clock, and the external reference clock itself. Make this driver dynamically enable all the clocks assigned to it instead of only enabling the first one or two clocks. Signed-off-by: Adam Ford diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 3af91b2b8f76..255e4bd68ed3 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -297,6 +297,8 @@ static bool usbhsc_is_multi_clks(struct usbhs_priv *priv) static int usbhsc_clk_get(struct device *dev, struct usbhs_priv *priv) { + unsigned int i; + if (!usbhsc_is_multi_clks(priv)) return 0; @@ -309,11 +311,13 @@ static int usbhsc_clk_get(struct device *dev, struct usbhs_priv *priv) * To backward compatibility with old DT, this driver checks the return * value if it's -ENOENT or not. */ - priv->clks[1] = of_clk_get(dev_of_node(dev), 1); - if (PTR_ERR(priv->clks[1]) == -ENOENT) - priv->clks[1] = NULL; - else if (IS_ERR(priv->clks[1])) - return PTR_ERR(priv->clks[1]); + for (i = 1; i < ARRAY_SIZE(priv->clks); i++) { + priv->clks[1] = of_clk_get(dev->of_node, i); + if (PTR_ERR(priv->clks[i]) == -ENOENT) + priv->clks[i] = NULL; + else if (IS_ERR(priv->clks[i])) + return PTR_ERR(priv->clks[i]); + } return 0; }