From 9a894953a97b5215fb602f1c5b541ae0192c70a7 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 29 Oct 2014 17:16:47 -0700 Subject: [PATCH] ARM: dts: Fix bootloader version dependencies by muxing n900 smc91x pins Apparently some versions of nolo don't mux the all the necessary GPMC pins for the smc91x probe to work properly. Let's fix this issue by adding mux support for GPMC to the kernel. Note that GPMC clk needs input enabled for OnenNAND to work. Cc: Kevin Hilman Cc: Roger Quadros Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3-n900.dts | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index 739fcf29c643..644d9f493c46 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -142,6 +142,33 @@ >; }; + gpmc_pins: pinmux_gpmc_pins { + pinctrl-single,pins = < + + /* address lines */ + OMAP3_CORE1_IOPAD(0x207a, PIN_OUTPUT | MUX_MODE0) /* gpmc_a1.gpmc_a1 */ + OMAP3_CORE1_IOPAD(0x207c, PIN_OUTPUT | MUX_MODE0) /* gpmc_a2.gpmc_a2 */ + OMAP3_CORE1_IOPAD(0x207e, PIN_OUTPUT | MUX_MODE0) /* gpmc_a3.gpmc_a3 */ + + /* data lines, gpmc_d0..d7 not muxable according to TRM */ + OMAP3_CORE1_IOPAD(0x209e, PIN_INPUT | MUX_MODE0) /* gpmc_d8.gpmc_d8 */ + OMAP3_CORE1_IOPAD(0x20a0, PIN_INPUT | MUX_MODE0) /* gpmc_d9.gpmc_d9 */ + OMAP3_CORE1_IOPAD(0x20a2, PIN_INPUT | MUX_MODE0) /* gpmc_d10.gpmc_d10 */ + OMAP3_CORE1_IOPAD(0x20a4, PIN_INPUT | MUX_MODE0) /* gpmc_d11.gpmc_d11 */ + OMAP3_CORE1_IOPAD(0x20a6, PIN_INPUT | MUX_MODE0) /* gpmc_d12.gpmc_d12 */ + OMAP3_CORE1_IOPAD(0x20a8, PIN_INPUT | MUX_MODE0) /* gpmc_d13.gpmc_d13 */ + OMAP3_CORE1_IOPAD(0x20aa, PIN_INPUT | MUX_MODE0) /* gpmc_d14.gpmc_d14 */ + OMAP3_CORE1_IOPAD(0x20ac, PIN_INPUT | MUX_MODE0) /* gpmc_d15.gpmc_d15 */ + + /* + * gpmc_ncs0, gpmc_nadv_ale, gpmc_noe, gpmc_nwe, gpmc_wait0 not muxable + * according to TRM. OneNAND seems to require PIN_INPUT on clock. + */ + OMAP3_CORE1_IOPAD(0x20b0, PIN_OUTPUT | MUX_MODE0) /* gpmc_ncs1.gpmc_ncs1 */ + OMAP3_CORE1_IOPAD(0x20be, PIN_INPUT | MUX_MODE0) /* gpmc_clk.gpmc_clk */ + >; + }; + i2c1_pins: pinmux_i2c1_pins { pinctrl-single,pins = < 0x18a (PIN_INPUT | MUX_MODE0) /* i2c1_scl */ @@ -588,6 +615,8 @@ ranges = <0 0 0x04000000 0x10000000>; /* 256MB */ ranges = <0 0 0x01000000 0x01000000>, /* 16 MB for OneNAND */ <1 0 0x02000000 0x01000000>; /* 16 MB for smc91c96 */ + pinctrl-names = "default"; + pinctrl-0 = <&gpmc_pins>; /* gpio-irq for dma: 65 */ -- 2.20.1