Since GPIO hogging fails to through error when booting with
gpio-pcf857x as module and NFS root filesystem. So by having
mode-gpio, it throw error to user so that the used can make
gpio-pcf857x as inbuilt for NFS. When using mmc/ramdisk as root
fs, cpsw will probe defer and re-probes again when gpio-pcf857x
module is inserted and ethernet becomes operational.
Signed-off-by: Mugunthan V N <mugunthan...@ti.com>
---
The driver patch is applied to net-next branch (also present in
linux-next) with commit '1d147ccbfc35 ("drivers: net: cpsw: Add
support to drive gpios for ethernet to be functional") and logs
[1] also pushed a branch [2] for testing.
[1]: http://pastebin.ubuntu.com/12306224/
[2]: git://git.ti.com/~mugunthanvnm/ti-linux-kernel/linux.git
cpsw-gpio-optional-v3
---
arch/arm/boot/dts/dra72-evm.dts | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts
index c11ccb1..b7eca13 100644
--- a/arch/arm/boot/dts/dra72-evm.dts
+++ b/arch/arm/boot/dts/dra72-evm.dts
@@ -353,12 +353,6 @@
interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
interrupt-controller;
#interrupt-cells = <2>;
-
- cpsw_sel_s0 {
- gpio-hog;
- gpios = <4 GPIO_ACTIVE_HIGH>;
- output-low;
- };
};
};
@@ -590,6 +584,7 @@
pinctrl-0 = <&cpsw_default>;
pinctrl-1 = <&cpsw_sleep>;
slaves = <1>;
+ mode-gpios = <&pcf_gpio_21 4 GPIO_ACTIVE_HIGH>;
};
&cpsw_emac0 {
--
2.6.0.rc2.10.gf4d9753
--
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