openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Tony Lindgren 2015-12-03 12:02:32 -08:00
parent 3a91b0616a
commit 9621557fc3
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm/boot/dts/dm814x.dtsi
View File

@ -205,13 +205,21 @@ scm_clockdomains: clockdomains {
};
};
/*
* 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>;
};
};