From: Masahiro Yamada Date: Thu, 26 Feb 2015 17:26:47 +0000 (+0900) Subject: serial: UniPhier: move LCR register setting to probe function X-Git-Tag: v2015.04-rc3~11^2~19 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=099cf77c155ffd9aef7c3783c608d7574177bda9;p=u-boot serial: UniPhier: move LCR register setting to probe function We do not have to set the LCR register every time we change the baud-rate. We just need to set it up once in the probe function. Signed-off-by: Masahiro Yamada --- diff --git a/drivers/serial/serial_uniphier.c b/drivers/serial/serial_uniphier.c index 327e0dc517..a6bd27facf 100644 --- a/drivers/serial/serial_uniphier.c +++ b/drivers/serial/serial_uniphier.c @@ -45,12 +45,6 @@ static int uniphier_serial_setbrg(struct udevice *dev, int baudrate) struct uniphier_serial __iomem *port = uniphier_serial_port(dev); const unsigned int mode_x_div = 16; unsigned int divisor; - u32 tmp; - - tmp = readl(&port->lcr_mcr); - tmp &= ~LCR_MASK; - tmp |= UART_LCR_WLEN8 << LCR_SHIFT; - writel(tmp, &port->lcr_mcr); divisor = DIV_ROUND_CLOSEST(plat->uartclk, mode_x_div * baudrate); @@ -93,14 +87,22 @@ static int uniphier_serial_pending(struct udevice *dev, bool input) static int uniphier_serial_probe(struct udevice *dev) { + u32 tmp; struct uniphier_serial_private_data *priv = dev_get_priv(dev); struct uniphier_serial_platform_data *plat = dev_get_platdata(dev); + struct uniphier_serial __iomem *port; - priv->membase = map_sysmem(plat->base, sizeof(struct uniphier_serial)); - - if (!priv->membase) + port = map_sysmem(plat->base, sizeof(struct uniphier_serial)); + if (!port) return -ENOMEM; + priv->membase = port; + + tmp = readl(&port->lcr_mcr); + tmp &= ~LCR_MASK; + tmp |= UART_LCR_WLEN8 << LCR_SHIFT; + writel(tmp, &port->lcr_mcr); + return 0; }