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[93.34.90.105]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-4214a4abdd5sm44772195e9.0.2024.06.05.12.03.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Jun 2024 12:03:47 -0700 (PDT) From: Christian Marangi To: Tom Rini , Lukasz Majewski , Sean Anderson , Ryder Lee , Weijie Gao , Chunfeng Yun , GSS_MTK_Uboot_upstream , Heiko Schocher , Peng Fan , Jaehoon Chung , Joe Hershberger , Ramon Fried , Jagan Teki , Christian Marangi , Sam Shih , Francois Berder , Simon Glass , Julien Masson , Peter Robinson , Marek Vasut , Bo-Cun Chen , This contributor prefers not to receive mails , Michal Simek , John Crispin , Heinrich Schuchardt , Mason Huo , Stefan Roese , Sumit Garg , Mark Kettenis , Sergei Antonov , Mayuresh Chitale , "SkyLake.Huang" , =?utf-8?q?Nicol=C3=B2_Verones?= =?utf-8?q?e?= , u-boot@lists.denx.de Subject: [PATCH 06/11] serial: mediatek: add support for bus clock and enable it Date: Wed, 5 Jun 2024 21:02:13 +0200 Message-ID: <20240605190220.17616-7-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240605190220.17616-1-ansuelsmth@gmail.com> References: <20240605190220.17616-1-ansuelsmth@gmail.com> MIME-Version: 1.0 X-Mailman-Approved-At: Wed, 05 Jun 2024 21:37:35 +0200 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean Upstream linux also provide the additional optional bus clock. Add support for it and also enable the baud and bus clock on probe. Signed-off-by: Christian Marangi --- drivers/serial/serial_mtk.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/serial/serial_mtk.c b/drivers/serial/serial_mtk.c index f146f2b006e..d34a31c9cf0 100644 --- a/drivers/serial/serial_mtk.c +++ b/drivers/serial/serial_mtk.c @@ -76,6 +76,7 @@ struct mtk_serial_regs { * driver * @regs: Register base of the serial port * @clk: The baud clock device + * @clk_bus: The bus clock device * @fixed_clk_rate: Fallback fixed baud clock rate if baud clock * device is not specified * @force_highspeed: Force using high-speed mode @@ -83,6 +84,7 @@ struct mtk_serial_regs { struct mtk_serial_priv { struct mtk_serial_regs __iomem *regs; struct clk clk; + struct clk clk_bus; u32 fixed_clk_rate; bool force_highspeed; }; @@ -220,6 +222,10 @@ static int mtk_serial_probe(struct udevice *dev) writel(UART_MCRVAL, &priv->regs->mcr); writel(UART_FCRVAL, &priv->regs->fcr); + clk_enable(&priv->clk); + if (priv->clk_bus.dev) + clk_enable(&priv->clk_bus); + return 0; } @@ -250,6 +256,8 @@ static int mtk_serial_of_to_plat(struct udevice *dev) } } + clk_get_by_name(dev, "bus", &priv->clk_bus); + priv->force_highspeed = dev_read_bool(dev, "mediatek,force-highspeed"); return 0;