1*4882a593SmuzhiyunSome versions of u-boot for this Chromebook check for tpm node 2*4882a593Smuzhiyunin the device tree and fail badly (reboot) if it is not found. 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunWhile not exactly correct, it is much easier to patch the mainline 5*4882a593Smuzhiyundevice tree to match u-boot expectations than to fix u-boot on 6*4882a593Smuzhiyunthis device. 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunSee https://code.google.com/p/chromium/issues/detail?id=220169 9*4882a593Smuzhiyunand https://lkml.org/lkml/2013/3/4/242 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunSigned-off-by: Alex Suykov <alex.suykov@gmail.com> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun--- a/arch/arm/boot/dts/exynos5250-snow-common.dtsi 14*4882a593Smuzhiyun+++ b/arch/arm/boot/dts/exynos5250-snow-common.dtsi 15*4882a593Smuzhiyun@@ -466,6 +466,11 @@ 16*4882a593Smuzhiyun status = "okay"; 17*4882a593Smuzhiyun samsung,i2c-sda-delay = <100>; 18*4882a593Smuzhiyun samsung,i2c-max-bus-freq = <66000>; 19*4882a593Smuzhiyun+ 20*4882a593Smuzhiyun+ tpm { 21*4882a593Smuzhiyun+ compatible = "infineon,slb9635tt"; 22*4882a593Smuzhiyun+ reg = <0x20>; 23*4882a593Smuzhiyun+ }; 24*4882a593Smuzhiyun }; 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun &i2c_5 { 27*4882a593Smuzhiyun 28