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authorTony Lindgren <tony@atomide.com>2015-12-03 12:02:32 -0800
committerTony Lindgren <tony@atomide.com>2015-12-09 16:53:46 -0800
commit9621557fc31f5e42f026217d67db023ebfe903c9 (patch)
tree773328a5b52e32aca1f34336ad300528fd73dd3e /arch/arm/boot/dts/dm814x.dtsi
parent3a91b0616a97c1cdfc5955082c5999663defd54e (diff)
downloadop-kernel-dev-9621557fc31f5e42f026217d67db023ebfe903c9.zip
op-kernel-dev-9621557fc31f5e42f026217d67db023ebfe903c9.tar.gz
ARM: dts: Fix dm814x pinctrl address and mask
Otherwise pinctrl won't work. Because of silicon errata for some dm814x versions, let's also keep bit 18 out of the function-mask and rely on the bootloader configuration for bit 18 as suggested by Matthijs van Duin <matthijsvanduin@gmail.com>. Devices with that need to use bit 18 can override the function-mask in the board specific dts file if really needed. Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot/dts/dm814x.dtsi')
-rw-r--r--arch/arm/boot/dts/dm814x.dtsi12
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/dm814x.dtsi b/arch/arm/boot/dts/dm814x.dtsi
index 68b156b..09a8d88 100644
--- a/arch/arm/boot/dts/dm814x.dtsi
+++ b/arch/arm/boot/dts/dm814x.dtsi
@@ -205,13 +205,21 @@
};
};
+ /*
+ * Note that silicon revision 2.1 and older
+ * require input enabled (bit 18 set) for all
+ * 3.3V I/Os to avoid cumulative hardware damage.
+ * For more info, see errata advisory 2.1.87.
+ * We leave bit 18 out of function-mask and rely
+ * on the bootloader for it.
+ */
pincntl: pinmux@800 {
compatible = "pinctrl-single";
- reg = <0x800 0xc38>;
+ reg = <0x800 0x438>;
#address-cells = <1>;
#size-cells = <0>;
pinctrl-single,register-width = <32>;
- pinctrl-single,function-mask = <0x300ff>;
+ pinctrl-single,function-mask = <0x307ff>;
};
};
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