diff --git a/core/linux-tegra/PKGBUILD b/core/linux-tegra/PKGBUILD
index db3337eac..6307297a9 100644
--- a/core/linux-tegra/PKGBUILD
+++ b/core/linux-tegra/PKGBUILD
@@ -2,7 +2,7 @@
 
 # nVidia Tegra kernel and headers
 #  - note: any other kernel packages should include headers for that march
-#  - there will be no v7 kernel26 package, each march will be tagged individually
+#  - there will be no v7 linux package, each march will be tagged individually
 
 noautobuild=1
 plugrel=1
@@ -11,27 +11,28 @@ pkgbase=linux-tegra
 pkgname=('linux-tegra' 'linux-headers-tegra')
 # pkgname=linux-custom       # Build kernel with a different name
 _kernelname=${pkgname#linux}
-_basekernel=3.1-rc4
+_basekernel=3.1-rc5
 pkgver=3.0.99
-pkgrel=5
+pkgrel=6
 arch=('arm')
 url="http://www.kernel.org/"
 license=('GPL2')
 makedepends=('xmlto' 'docbook-xsl' 'uboot-mkimage')
 options=('!strip')
-source=("http://www.kernel.org/pub/linux/kernel/v3.0/testing/linux-3.1-rc4.tar.bz2"
+source=("torvalds-linux-v3.1-rc5-0-gddf2835.tar.gz::https://github.com/torvalds/linux/tarball/v3.1-rc5"
         'archlinuxarm.patch'
+        'armdma.patch'
         'config'
         'change-default-console-loglevel.patch')
-md5sums=('a04ba2c0dca8d5989e20ea3a488f609d'
+md5sums=('beeed683a8da664c11ec33807554246c'
          'bc631a5c97e2b6c871cdbbfa6c75ae38'
-         '333c9d19e10b4990162d33cc72d6500b'
+         '6e7667c6c6348bfeca22eaaa05462d62'
+         '57ea98beffeff10488cd81651fa9cb85'
          '9d3c56a4b999c8bfbd4018089a62f662')
 
 build() {
-  cd "${srcdir}/linux-${_basekernel}"
-
-  #patch -p1 -i "${srcdir}/patch-${pkgver}"
+  #cd "${srcdir}/linux-${_basekernel}"
+  cd "${srcdir}/torvalds-linux-dba5cf0"
 
   # add latest fixes from stable queue, if needed
   # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git
@@ -44,6 +45,9 @@ build() {
   # ALARM: remove deprecated mach/hardware.h include in cpu-tegra.c
   patch -Np1 -i "${srcdir}/archlinuxarm.patch"
 
+  # ALARM: add dma_coherent_write_sync calls to USB EHCI driver
+  patch -Np1 -i "${srcdir}/armdma.patch"
+
   cat "${srcdir}/config" > ./.config
 
   # remove the sublevel from Makefile
@@ -90,7 +94,8 @@ package_linux-tegra() {
   backup=("etc/mkinitcpio.d/${pkgname}.preset")
   install=${pkgname}.install
 
-  cd "${srcdir}/linux-${_basekernel}"
+  #cd "${srcdir}/linux-${_basekernel}"
+  cd "${srcdir}/torvalds-linux-dba5cf0"
 
   KARCH=arm
 
@@ -126,7 +131,8 @@ package_linux-headers-tegra() {
   cd "${pkgdir}/lib/modules/${_kernver}"
   ln -sf ../../../usr/src/linux-${_kernver} build
 
-  cd "${srcdir}/linux-${_basekernel}"
+  #cd "${srcdir}/linux-${_basekernel}"
+  cd "${srcdir}/torvalds-linux-dba5cf0"
   install -D -m644 Makefile \
     "${pkgdir}/usr/src/linux-${_kernver}/Makefile"
   install -D -m644 kernel/Makefile \
@@ -247,7 +253,3 @@ package_linux-headers-tegra() {
   # remove unneeded architectures
   rm -rf "${pkgdir}"/usr/src/linux-${_kernver}/arch/{alpha,arm26,avr32,blackfin,cris,frv,h8300,ia64,m32r,m68k,m68knommu,mips,microblaze,mn10300,parisc,powerpc,ppc,s390,sh,sh64,sparc,sparc64,um,v850,x86,xtensa}
 }
-md5sums=('cd28799ad61707da720f889dde4cf4f6'
-         'bc631a5c97e2b6c871cdbbfa6c75ae38'
-         '0d1fc3d2b91fdf414c8574ef1094a2c9'
-         '9d3c56a4b999c8bfbd4018089a62f662')
diff --git a/core/linux-tegra/armdma.patch b/core/linux-tegra/armdma.patch
new file mode 100644
index 000000000..e13eaedfd
--- /dev/null
+++ b/core/linux-tegra/armdma.patch
@@ -0,0 +1,122 @@
+diff -urN linux-3.1-rc4-a/arch/arm/include/asm/dma-mapping.h linux-3.1-rc4-b/arch/arm/include/asm/dma-mapping.h
+--- linux-3.1-rc4-a/arch/arm/include/asm/dma-mapping.h	2011-08-29 05:16:01.000000000 +0100
++++ linux-3.1-rc4-b/arch/arm/include/asm/dma-mapping.h	2011-09-02 12:09:00.000000000 +0100
+@@ -205,6 +205,15 @@
+ int dma_mmap_writecombine(struct device *, struct vm_area_struct *,
+ 		void *, dma_addr_t, size_t);
+ 
++#ifdef CONFIG_ARM_DMA_MEM_BUFFERABLE
++#define ARCH_HAS_DMA_COHERENT_WRITE_SYNC
++
++static inline void dma_coherent_write_sync(void)
++{
++	dsb();
++	outer_sync();
++}
++#endif
+ 
+ #ifdef CONFIG_DMABOUNCE
+ /*
+diff -urN linux-3.1-rc4-a/Documentation/DMA-API-HOWTO.txt linux-3.1-rc4-b/Documentation/DMA-API-HOWTO.txt
+--- linux-3.1-rc4-a/Documentation/DMA-API-HOWTO.txt	2011-08-29 05:16:01.000000000 +0100
++++ linux-3.1-rc4-b/Documentation/DMA-API-HOWTO.txt	2011-09-02 12:01:09.000000000 +0100
+@@ -400,6 +400,22 @@
+ from a pool before you destroy the pool. This function may not
+ be called in interrupt context.
+ 
++Some architectures which supporting DMA coherent memory may still have write
++buffering between the CPU and DMA memory. This buffering may delay CPU writes
++from reaching coherent memory in a timely manner. These delays in turn can
++lead lead to dramatic performance issues in certain cases. An architecture
++may mitigate this problem to a large degree by having a write buffer flush
++implicit in the MMIO functions used to write to device registers. This works
++for the most common cases where a driver needs to write to a register to tell
++a device that something was written to the shared coherent memory. There are
++other cases where the device polls the dma-coherent memory for data written
++by the driver. In such cases, the driver needs to explicity force write buffer
++data to memory by calling:
++
++	dma_coherent_write_sync();
++
++
++
+ 			DMA Direction
+ 
+ The interfaces described in subsequent portions of this document
+diff -urN linux-3.1-rc4-a/Documentation/DMA-API.txt linux-3.1-rc4-b/Documentation/DMA-API.txt
+--- linux-3.1-rc4-a/Documentation/DMA-API.txt	2011-08-29 05:16:01.000000000 +0100
++++ linux-3.1-rc4-b/Documentation/DMA-API.txt	2011-09-02 12:03:06.000000000 +0100
+@@ -418,6 +418,18 @@
+ 	....
+ 
+ 
++Part Ie - Write buffering to dma-coherent memory
++------------------------------------------------
++
++Some architectures supporting DMA coherent memory may have write
++buffering between the CPU and DMA memory. This buffering may delay
++CPU writes from reaching coherent memory in a timely manner.
++
++    void
++    dma_coherent_write_sync()
++
++Force any outstanding coherent writes to memory.
++
+ Part II - Advanced dma_ usage
+ -----------------------------
+ 
+diff -urN linux-3.1-rc4-a/drivers/usb/host/ehci-q.c linux-3.1-rc4-b/drivers/usb/host/ehci-q.c
+--- linux-3.1-rc4-a/drivers/usb/host/ehci-q.c	2011-08-29 05:16:01.000000000 +0100
++++ linux-3.1-rc4-b/drivers/usb/host/ehci-q.c	2011-09-02 12:17:20.000000000 +0100
+@@ -114,6 +114,7 @@
+ 	/* HC must see latest qtd and qh data before we clear ACTIVE+HALT */
+ 	wmb ();
+ 	hw->hw_token &= cpu_to_hc32(ehci, QTD_TOGGLE | QTD_STS_PING);
++	dma_coherent_write_sync();
+ }
+ 
+ /* if it weren't for a common silicon quirk (writing the dummy into the qh
+@@ -404,6 +405,7 @@
+ 					wmb();
+ 					hw->hw_token = cpu_to_hc32(ehci,
+ 							token);
++					dma_coherent_write_sync();
+ 					goto retry_xacterr;
+ 				}
+ 				stopped = 1;
+@@ -753,8 +755,10 @@
+ 	}
+ 
+ 	/* by default, enable interrupt on urb completion */
+-	if (likely (!(urb->transfer_flags & URB_NO_INTERRUPT)))
++	if (likely(!(urb->transfer_flags & URB_NO_INTERRUPT))) {
+ 		qtd->hw_token |= cpu_to_hc32(ehci, QTD_IOC);
++		dma_coherent_write_sync();
++	}
+ 	return head;
+ 
+ cleanup:
+@@ -1081,6 +1085,7 @@
+ 			/* let the hc process these next qtds */
+ 			wmb ();
+ 			dummy->hw_token = token;
++			dma_coherent_write_sync();
+ 
+ 			urb->hcpriv = qh_get (qh);
+ 		}
+diff -urN linux-3.1-rc4-a/include/linux/dma-mapping.h linux-3.1-rc4-b/include/linux/dma-mapping.h
+--- linux-3.1-rc4-a/include/linux/dma-mapping.h	2011-08-29 05:16:01.000000000 +0100
++++ linux-3.1-rc4-b/include/linux/dma-mapping.h	2011-09-02 12:06:06.000000000 +0100
+@@ -154,6 +154,12 @@
+ }
+ #endif
+ 
++#ifndef ARCH_HAS_DMA_COHERENT_WRITE_SYNC
++static inline void dma_coherent_write_sync(void)
++{
++}
++#endif
++
+ /*
+  * Managed DMA API
+  */
diff --git a/core/linux-tegra/config b/core/linux-tegra/config
index 5d27ad445..1e2dc6877 100644
--- a/core/linux-tegra/config
+++ b/core/linux-tegra/config
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/arm 3.1.0-rc3 Kernel Configuration
+# Linux/arm 3.1.0-rc5 Kernel Configuration
 #
 CONFIG_ARM=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
@@ -1479,6 +1479,7 @@ CONFIG_SATA_MV=m
 #
 # CONFIG_PATA_ALI is not set
 # CONFIG_PATA_AMD is not set
+# CONFIG_PATA_ARASAN_CF is not set
 # CONFIG_PATA_ARTOP is not set
 # CONFIG_PATA_ATIIXP is not set
 # CONFIG_PATA_ATP867X is not set
@@ -2626,6 +2627,7 @@ CONFIG_VIDEO_M52790=m
 # CONFIG_VIDEO_MXB is not set
 # CONFIG_VIDEO_HEXIUM_ORION is not set
 # CONFIG_VIDEO_HEXIUM_GEMINI is not set
+# CONFIG_VIDEO_TIMBERDALE is not set
 # CONFIG_VIDEO_CX88 is not set
 # CONFIG_VIDEO_CX23885 is not set
 # CONFIG_VIDEO_AU0828 is not set
@@ -2969,7 +2971,7 @@ CONFIG_DRM_TTM=y
 # CONFIG_DRM_VIA is not set
 # CONFIG_DRM_SAVAGE is not set
 # CONFIG_STUB_POULSBO is not set
-# CONFIG_VGASTATE is not set
+CONFIG_VGASTATE=m
 CONFIG_VIDEO_OUTPUT_CONTROL=y
 CONFIG_FB=y
 CONFIG_FIRMWARE_EDID=y
@@ -3003,7 +3005,10 @@ CONFIG_FB_MODE_HELPERS=y
 # CONFIG_FB_IMSTT is not set
 # CONFIG_FB_UVESA is not set
 # CONFIG_FB_S1D13XXX is not set
-# CONFIG_FB_NVIDIA is not set
+CONFIG_FB_NVIDIA=m
+# CONFIG_FB_NVIDIA_I2C is not set
+# CONFIG_FB_NVIDIA_DEBUG is not set
+CONFIG_FB_NVIDIA_BACKLIGHT=y
 # CONFIG_FB_RIVA is not set
 # CONFIG_FB_MATROX is not set
 # CONFIG_FB_RADEON is not set
@@ -3700,7 +3705,15 @@ CONFIG_RTC_DRV_EM3027=y
 # CONFIG_RTC_DRV_PL030 is not set
 # CONFIG_RTC_DRV_PL031 is not set
 CONFIG_RTC_DRV_TEGRA=y
-# CONFIG_DMADEVICES is not set
+CONFIG_DMADEVICES=y
+# CONFIG_DMADEVICES_DEBUG is not set
+
+#
+# DMA Devices
+#
+# CONFIG_AMBA_PL08X is not set
+# CONFIG_DW_DMAC is not set
+# CONFIG_TIMB_DMA is not set
 # CONFIG_AUXDISPLAY is not set
 CONFIG_UIO=m
 # CONFIG_UIO_CIF is not set