summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
authorFurquan Shaikh <furquan@google.com>2019-08-09 08:02:26 -0700
committerShelley Chen <shchen@google.com>2019-08-13 19:47:37 +0000
commit8c206c9fdddca7e69130ab3a6fa3bc505c6e4cc1 (patch)
treeaff506e98703f49a9ccdd2e78cc95ab0e40b597f /src
parent7439a7adafdf25233701914ebb5e3d8dd7a1756c (diff)
downloadcoreboot-8c206c9fdddca7e69130ab3a6fa3bc505c6e4cc1.tar.xz
mb/google/hatch/var/kohaku: Change Atmel touchscreen HID to PRP0001
This change updates the Atmel touchscreen ACPI node to use PRP0001 as _HID to allow OF-style compatible string matching for enumeration. Reason for this change: Atmel touchscreen driver in Linux kernel looks for "compatible" property to decide if it is okay to attach to the device. This check seems to be a protection against old firmware in the field that do not have the right properties. BUG=b:129162037 TEST=Verified that touchscreen works on Kohaku. Change-Id: I6d027f8533494e903efd1da8da1fa273a97fe9b2 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34814 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Diffstat (limited to 'src')
-rw-r--r--src/mainboard/google/hatch/variants/kohaku/overridetree.cb3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mainboard/google/hatch/variants/kohaku/overridetree.cb b/src/mainboard/google/hatch/variants/kohaku/overridetree.cb
index 84a90ae68d..1d4c1c3e82 100644
--- a/src/mainboard/google/hatch/variants/kohaku/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/kohaku/overridetree.cb
@@ -86,7 +86,8 @@ chip soc/intel/cannonlake
device pci 15.1 on
chip drivers/i2c/generic
- register "hid" = ""ATML0001""
+ register "hid" = "ACPI_DT_NAMESPACE_HID"
+ register "compat_string" = ""atmel,maxtouch""
register "desc" = ""Atmel Touchscreen""
register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_D16_IRQ)"
register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D15)"