From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: [PATCH 3/3] davinci: Map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE Date: Sun, 8 Aug 2010 15:48:22 +0530 Message-ID: <1281262702-27732-1-git-send-email-santosh.shilimkar@ti.com> Return-path: Received: from arroyo.ext.ti.com ([192.94.94.40]:39592 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751645Ab0HHKSe (ORCPT ); Sun, 8 Aug 2010 06:18:34 -0400 Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Santosh Shilimkar , davinci-linux-open-source@linux.davincidsp.com, Kevin Hilman On Davinci SRAM is mapped as MT_DEVICE becasue of the section mapping pre-requisite instead of intended MT_MEMORY_NONCACHED Since the section mapping limitation gets fixed with first patch in this series, the MT_MEMORY_NONCACHED can be used now. Have not tested this, so somebody with Davinci hardware can try this out Signed-off-by: Santosh Shilimkar Cc: davinci-linux-open-source@linux.davincidsp.com Cc: Kevin Hilman --- arch/arm/mach-davinci/dm355.c | 3 +-- arch/arm/mach-davinci/dm365.c | 3 +-- arch/arm/mach-davinci/dm644x.c | 3 +-- arch/arm/mach-davinci/dm646x.c | 3 +-- 4 files changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c index 3834781..e7bd2ad 100644 --- a/arch/arm/mach-davinci/dm355.c +++ b/arch/arm/mach-davinci/dm355.c @@ -767,8 +767,7 @@ static struct map_desc dm355_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00010000), .length = SZ_32K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c index a146849..5dee032 100644 --- a/arch/arm/mach-davinci/dm365.c +++ b/arch/arm/mach-davinci/dm365.c @@ -967,8 +967,7 @@ static struct map_desc dm365_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00010000), .length = SZ_32K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c index 7ad1520..5112d51 100644 --- a/arch/arm/mach-davinci/dm644x.c +++ b/arch/arm/mach-davinci/dm644x.c @@ -651,8 +651,7 @@ static struct map_desc dm644x_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00008000), .length = SZ_16K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c index 9404565..97078f4 100644 --- a/arch/arm/mach-davinci/dm646x.c +++ b/arch/arm/mach-davinci/dm646x.c @@ -735,8 +735,7 @@ static struct map_desc dm646x_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00010000), .length = SZ_32K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; -- 1.6.0.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: santosh.shilimkar@ti.com (Santosh Shilimkar) Date: Sun, 8 Aug 2010 15:48:22 +0530 Subject: [PATCH 3/3] davinci: Map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE Message-ID: <1281262702-27732-1-git-send-email-santosh.shilimkar@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Davinci SRAM is mapped as MT_DEVICE becasue of the section mapping pre-requisite instead of intended MT_MEMORY_NONCACHED Since the section mapping limitation gets fixed with first patch in this series, the MT_MEMORY_NONCACHED can be used now. Have not tested this, so somebody with Davinci hardware can try this out Signed-off-by: Santosh Shilimkar Cc: davinci-linux-open-source at linux.davincidsp.com Cc: Kevin Hilman --- arch/arm/mach-davinci/dm355.c | 3 +-- arch/arm/mach-davinci/dm365.c | 3 +-- arch/arm/mach-davinci/dm644x.c | 3 +-- arch/arm/mach-davinci/dm646x.c | 3 +-- 4 files changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c index 3834781..e7bd2ad 100644 --- a/arch/arm/mach-davinci/dm355.c +++ b/arch/arm/mach-davinci/dm355.c @@ -767,8 +767,7 @@ static struct map_desc dm355_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00010000), .length = SZ_32K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c index a146849..5dee032 100644 --- a/arch/arm/mach-davinci/dm365.c +++ b/arch/arm/mach-davinci/dm365.c @@ -967,8 +967,7 @@ static struct map_desc dm365_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00010000), .length = SZ_32K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c index 7ad1520..5112d51 100644 --- a/arch/arm/mach-davinci/dm644x.c +++ b/arch/arm/mach-davinci/dm644x.c @@ -651,8 +651,7 @@ static struct map_desc dm644x_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00008000), .length = SZ_16K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c index 9404565..97078f4 100644 --- a/arch/arm/mach-davinci/dm646x.c +++ b/arch/arm/mach-davinci/dm646x.c @@ -735,8 +735,7 @@ static struct map_desc dm646x_io_desc[] = { .virtual = SRAM_VIRT, .pfn = __phys_to_pfn(0x00010000), .length = SZ_32K, - /* MT_MEMORY_NONCACHED requires supersection alignment */ - .type = MT_DEVICE, + .type = MT_MEMORY_NONCACHED, }, }; -- 1.6.0.4