From patchwork Fri Sep 11 17:57:50 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: vikram pandita X-Patchwork-Id: 46908 X-Patchwork-Delegate: tony@atomide.com Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n8BI3FtK022574 for ; Fri, 11 Sep 2009 18:03:15 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755795AbZIKSDL (ORCPT ); Fri, 11 Sep 2009 14:03:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755823AbZIKSDK (ORCPT ); Fri, 11 Sep 2009 14:03:10 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:57262 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755793AbZIKSDJ (ORCPT ); Fri, 11 Sep 2009 14:03:09 -0400 Received: from dlep34.itg.ti.com ([157.170.170.115]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id n8BI35SF014020; Fri, 11 Sep 2009 13:03:05 -0500 Received: from legion.dal.design.ti.com (localhost [127.0.0.1]) by dlep34.itg.ti.com (8.13.7/8.13.7) with ESMTP id n8BI32Gj009460; Fri, 11 Sep 2009 13:03:02 -0500 (CDT) Received: from vip-tid (lta0307903-128247075087.am.dhcp.ti.com [128.247.75.87]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id n8BI32Z13574; Fri, 11 Sep 2009 13:03:02 -0500 (CDT) Received: from vip-tid (localhost.localdomain [127.0.0.1]) by vip-tid (Postfix) with ESMTP id 43E7529C9D7; Fri, 11 Sep 2009 12:57:52 -0500 (CDT) Received: (from vikram@localhost) by vip-tid (8.14.3/8.14.3/Submit) id n8BHvqfL009818; Fri, 11 Sep 2009 12:57:52 -0500 X-Authentication-Warning: vip-tid: vikram set sender to vikram.pandita@ti.com using -f From: Vikram Pandita To: linux-omap@vger.kernel.org Cc: Vikram Pandita , Erik Gilling Subject: [PATCH v2 1/2] OMAP: Zoom2: Add DEBUG_LL interface using Quart Date: Fri, 11 Sep 2009 12:57:50 -0500 Message-Id: <1252691870-9785-1-git-send-email-vikram.pandita@ti.com> X-Mailer: git-send-email 1.6.3.3.334.g916e1 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org This patch adds DEBUG_LL interface for Zoom2 board. The low level debug uart now points corrctly to External Quad uart controller on detachable debug board. The Quad uart is available over GPMC chip select with physical address 0x10000000. This physical address has been mapped to virtual address 0xFB000000 as per static mapping. This patch is adapted from a version by Erik Gilling: http://android.git.kernel.org/?p=kernel/omap.git; a=commit;h=e9d72efdd88877d2d6ea74a08983ace0dcc771d3 Signed-off-by: Vikram Pandita Cc: Erik Gilling --- arch/arm/mach-omap2/board-zoom-debugboard.c | 5 +++-- arch/arm/mach-omap2/board-zoom2.c | 19 +++++++++++++++++-- arch/arm/plat-omap/include/mach/io.h | 6 ++++++ 3 files changed, 26 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-omap2/board-zoom-debugboard.c b/arch/arm/mach-omap2/board-zoom-debugboard.c index 1f13e2a..70a4bba 100644 --- a/arch/arm/mach-omap2/board-zoom-debugboard.c +++ b/arch/arm/mach-omap2/board-zoom-debugboard.c @@ -82,9 +82,10 @@ static inline void __init zoom2_init_smsc911x(void) static struct plat_serial8250_port serial_platform_data[] = { { - .mapbase = 0x10000000, + .membase = IOMEM(ZOOM2_EXT_QUART_VIRT), + .mapbase = ZOOM2_EXT_QUART_PHYS, .irq = OMAP_GPIO_IRQ(102), - .flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ, + .flags = UPF_BOOT_AUTOCONF|UPF_SHARE_IRQ, .irqflags = IRQF_SHARED | IRQF_TRIGGER_RISING, .iotype = UPIO_MEM, .regshift = 1, diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c index 324009e..467e961 100644 --- a/arch/arm/mach-omap2/board-zoom2.c +++ b/arch/arm/mach-omap2/board-zoom2.c @@ -19,10 +19,12 @@ #include #include +#include #include #include #include +#include #include "mmc-twl4030.h" @@ -269,15 +271,28 @@ static void __init omap_zoom2_init(void) usb_musb_init(); } +static struct map_desc zoom2_io_desc[] __initdata = { + { + .virtual = ZOOM2_EXT_QUART_VIRT, + .pfn = __phys_to_pfn(ZOOM2_EXT_QUART_PHYS), + .length = ZOOM2_EXT_QUART_SIZE, + .type = MT_DEVICE + } +}; + static void __init omap_zoom2_map_io(void) { omap2_set_globals_343x(); + + /* Map external quad UART virt to phy mapping */ + iotable_init(zoom2_io_desc, ARRAY_SIZE(zoom2_io_desc)); + omap2_map_common_io(); } MACHINE_START(OMAP_ZOOM2, "OMAP Zoom2 board") - .phys_io = 0x48000000, - .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc, + .phys_io = ZOOM2_EXT_QUART_PHYS, + .io_pg_offst = ((ZOOM2_EXT_QUART_VIRT) >> 18) & 0xfffc, .boot_params = 0x80000100, .map_io = omap_zoom2_map_io, .init_irq = omap_zoom2_init_irq, diff --git a/arch/arm/plat-omap/include/mach/io.h b/arch/arm/plat-omap/include/mach/io.h index 8d32df3..d67f06c 100644 --- a/arch/arm/plat-omap/include/mach/io.h +++ b/arch/arm/plat-omap/include/mach/io.h @@ -169,6 +169,12 @@ #define DSP_MMU_34XX_VIRT 0xe2000000 #define DSP_MMU_34XX_SIZE SZ_4K +/* Map External Quad UART for Zoom2 board */ +#define ZOOM2_EXT_QUART_PHYS 0x10000000 /* PHY address if fixed */ +#define ZOOM2_EXT_QUART_PHY_TO_VIRT_OFF 0xEB000000 +#define ZOOM2_EXT_QUART_VIRT 0xFB000000 +#define ZOOM2_EXT_QUART_SIZE SZ_16 + /* * ---------------------------------------------------------------------------- * Omap4 specific IO mapping