From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wg0-f47.google.com ([74.125.82.47]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UET4G-0005So-Me for barebox@lists.infradead.org; Sat, 09 Mar 2013 23:20:45 +0000 Received: by mail-wg0-f47.google.com with SMTP id dr13so3692617wgb.2 for ; Sat, 09 Mar 2013 15:20:42 -0800 (PST) From: Vicente Bergas Date: Sun, 10 Mar 2013 00:19:37 +0100 Message-Id: <1362871182-25726-5-git-send-email-vicencb@gmail.com> In-Reply-To: <1362871182-25726-1-git-send-email-vicencb@gmail.com> References: <1362871182-25726-1-git-send-email-vicencb@gmail.com> 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" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 4/9] omap_uart: add low level port serial initialization To: barebox@lists.infradead.org Cc: Vicente Bergas some sort of UART setup has to be done in order to use PUTC_LL Signed-off-by: Vicente Bergas --- arch/arm/mach-omap/include/mach/debug_ll.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/arm/mach-omap/include/mach/debug_ll.h b/arch/arm/mach-omap/include/mach/debug_ll.h index eea6eb3..9740848 100644 --- a/arch/arm/mach-omap/include/mach/debug_ll.h +++ b/arch/arm/mach-omap/include/mach/debug_ll.h @@ -45,9 +45,30 @@ #endif #define LSR_THRE 0x20 /* Xmit holding register empty */ +#define LCR_BKSE 0x80 /* Bank select enable */ #define LSR (5 << 2) #define THR (0 << 2) +#define DLL (0 << 2) +#define IER (1 << 2) +#define DLM (1 << 2) +#define FCR (2 << 2) +#define LCR (3 << 2) +#define MCR (4 << 2) +#define MDR (8 << 2) +static inline void INIT_LL(void) +{ + writeb(0x00, UART_BASE + LCR); + writeb(0x00, UART_BASE + IER); + writeb(0x07, UART_BASE + MDR); + writeb(LCR_BKSE, UART_BASE + LCR); + writeb(26, UART_BASE + DLL); /* 115200 */ + writeb(0, UART_BASE + DLM); + writeb(0x03, UART_BASE + LCR); + writeb(0x03, UART_BASE + MCR); + writeb(0x07, UART_BASE + FCR); + writeb(0x00, UART_BASE + MDR); +} static inline void PUTC_LL(char c) { /* Wait until there is space in the FIFO */ -- 1.8.1.5 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox