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Date: Fri, 8 Jul 2016 10:11:06 +0200 From: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org> To: jorge.ramirez-ortiz@...aro.org, linux@...linux.org.uk, xuwei5@...ilicon.com, mturquette@...libre.com Cc: guodong.xu@...aro.org, sboyd@...eaurora.org, xinliang.liu@...aro.org, john.stultz@...aro.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH 1/2] tty: amba-pl011: add support for clock frequency setting via dt Allow to specify the clock frequency for any given port via the assigned-clock-rates device tree property. Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org> Tested-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org> --- drivers/tty/serial/amba-pl011.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 1b7331e..51867ab 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -55,6 +55,7 @@ #include <linux/types.h> #include <linux/of.h> #include <linux/of_device.h> +#include <linux/clk/clk-conf.h> #include <linux/pinctrl/consumer.h> #include <linux/sizes.h> #include <linux/io.h> @@ -2472,6 +2473,10 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) if (IS_ERR(uap->clk)) return PTR_ERR(uap->clk); + ret = of_clk_set_defaults(dev->dev.of_node, false); + if (ret < 0) + return ret; + uap->reg_offset = vendor->reg_offset; uap->vendor = vendor; uap->fifosize = vendor->get_fifosize(dev); -- 2.7.4
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