From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Spl77-0002ef-HN for barebox@lists.infradead.org; Fri, 13 Jul 2012 19:01:19 +0000 Received: from dude.hi.pengutronix.de ([2001:6f8:1178:2:21e:67ff:fe11:9c5c]) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1Spl72-0008Ec-Li for barebox@lists.infradead.org; Fri, 13 Jul 2012 21:01:12 +0200 Received: from jbe by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1Spl72-0005In-ID for barebox@lists.infradead.org; Fri, 13 Jul 2012 21:01:12 +0200 From: Juergen Beisert Date: Fri, 13 Jul 2012 21:00:57 +0200 Message-Id: <1342206070-29698-6-git-send-email-jbe@pengutronix.de> In-Reply-To: <1342206070-29698-1-git-send-email-jbe@pengutronix.de> References: <1342206070-29698-1-git-send-email-jbe@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 05/18] Samsung/serial: make the clock source configureable To: barebox@lists.infradead.org Instead of taking the value from somewhere, use the menu to select one. Also provide sane default values for known SoCs. Signed-off-by: Juergen Beisert --- drivers/serial/Kconfig | 12 ++++++++++++ drivers/serial/serial_s3c.c | 7 +------ 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index a9383da..a118aaf 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -85,6 +85,18 @@ config DRIVER_SERIAL_S3C help Say Y here if you want to use the CONS on a Samsung S3C CPU +config DRIVER_SERIAL_S3C_CLK + int + prompt "input clock reference" + depends on DRIVER_SERIAL_S3C + default 0 if ARCH_S3C24xx + default 3 if ARCH_S5PCxx + help + Select one of up to four available clock sources for the UART: + 0+1: PCLK, 2: UCLK0, 3: UCLK1 + Note: not all values are possible on all Samsung SoCs. Read the + manual if unsure. + config DRIVER_SERIAL_S3C_AUTOSYNC bool "Enable auto flow" depends on DRIVER_SERIAL_S3C diff --git a/drivers/serial/serial_s3c.c b/drivers/serial/serial_s3c.c index ff3792b..5c05ba8 100644 --- a/drivers/serial/serial_s3c.c +++ b/drivers/serial/serial_s3c.c @@ -47,11 +47,6 @@ # define UINTM 0x38 /* interrupt mask register */ #endif -#ifndef S3C_UART_CLKSEL -/* Use pclk */ -# define S3C_UART_CLKSEL 0 -#endif - struct s3c_uart { void __iomem *regs; struct console_device cdev; @@ -108,7 +103,7 @@ static int s3c_serial_init_port(struct console_device *cdev) /* tx=level,rx=edge,disable timeout int.,enable rx error int., * normal, interrupt or polling, no pre-divider */ - writew(0x0245 | ((S3C_UART_CLKSEL) << 10), base + UCON); + writew(0x0245 | ((CONFIG_DRIVER_SERIAL_S3C_CLK) << 10), base + UCON); #ifdef S3C_UART_HAS_UINTM /* 'interrupt or polling mode' for both directions */ -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox