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authorTroy Kisky <troy.kisky@boundarydevices.com>2013-12-20 11:47:07 -0700
committerShawn Guo <shawn.guo@linaro.org>2014-02-09 21:29:44 +0800
commitd8c765e0d1ddbd5032c2491c82cc9660c2f0e7f2 (patch)
treec3e808c41d5ff39c822e68e48ac9e3576a0a5d01 /arch/arm/boot/dts/imx6q-pinfunc.h
parenta58a12ae00ac64ab01fa0931309f66b5bd056fe2 (diff)
downloadlinux-stericsson-d8c765e0d1ddbd5032c2491c82cc9660c2f0e7f2.tar.gz
ARM: dts: imx: pinfunc: add MX6QDL_PAD_GPIO_6__ENET_IRQ
From "Chip Errata for the i.MX 6Dual/6Quad" ERR006687 ENET: Only the ENET wake-up interrupt request can wake the system from Wait mode. The ENET block generates many interrupts. Only one of these interrupt lines is connected to the General Power Controller (GPC) block, but a logical OR of all of the ENET interrupts is connected to the General Interrupt Controller (GIC). When the system enters Wait mode, a normal RX Done or TX Done does not wake up the system because the GPC cannot see this interrupt. This impacts performance of the ENET block because its interrupts are serviced only when the chip exits Wait mode due to an interrupt from some other wake-up source. Adding MX6QDL_PAD_GPIO_6__ENET_IRQ is the 1st step to workaround this problem. The input reg is set to 0x3c to set IOMUX_OBSRV_MUX1 to ENET_IRQ. The mux reg value is 0x11, so that the observable mux is routed to this pin and to the gpio controller(sion bit). These magic values come from Ranjani Vaidyanathan's patch: "ENGR00257847-1 MX6Q/DL-Fix Ethernet performance issue when WAIT mode is active" Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> CC: Ranjani Vaidyanathan <ra5478@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/imx6q-pinfunc.h')
-rw-r--r--arch/arm/boot/dts/imx6q-pinfunc.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx6q-pinfunc.h b/arch/arm/boot/dts/imx6q-pinfunc.h
index e5834b2110cf..9fc6120a1853 100644
--- a/arch/arm/boot/dts/imx6q-pinfunc.h
+++ b/arch/arm/boot/dts/imx6q-pinfunc.h
@@ -673,6 +673,7 @@
#define MX6QDL_PAD_GPIO_3__USB_H1_OC 0x22c 0x5fc 0x948 0x6 0x1
#define MX6QDL_PAD_GPIO_3__MLB_CLK 0x22c 0x5fc 0x900 0x7 0x1
#define MX6QDL_PAD_GPIO_6__ESAI_TX_CLK 0x230 0x600 0x870 0x0 0x1
+#define MX6QDL_PAD_GPIO_6__ENET_IRQ 0x230 0x600 0x03c 0x11 0xff000609
#define MX6QDL_PAD_GPIO_6__I2C3_SDA 0x230 0x600 0x8ac 0x2 0x1
#define MX6QDL_PAD_GPIO_6__GPIO1_IO06 0x230 0x600 0x000 0x5 0x0
#define MX6QDL_PAD_GPIO_6__SD2_LCTL 0x230 0x600 0x000 0x6 0x0