tpm2: tis_spi: add linux compatible fallback string
This solves a compatibility issue with Linux device trees
that contain TPMv2.x hardware. So it's easier to import DTS
from upstream kernel when migrating board init from C code
to DTS.
The issue is that fallback binding is different between Linux
and u-Boot.
Linux: "tcg,tpm_tis-spi"
U-Boot: "tis,tpm2-spi"
As there are currently no in-tree users of the U-Boot binding,
it makes sense to use Linux fallback binding.
Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt b/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
index b48a151..3a2ee4b 100644
--- a/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
+++ b/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
@@ -2,7 +2,7 @@
-------------------------------
Required properties:
-- compatible : Should be "tis,tpm2-spi"
+- compatible : Should be "tcg,tpm_tis-spi"
- reg : SPI Chip select
Optional properties:
@@ -12,7 +12,7 @@
Example:
tpm@1 {
- compatible = "tis,tpm2-spi";
+ compatible = "tcg,tpm_tis-spi";
reg = <1>;
spi-max-frequency = <10000000>;
};
diff --git a/drivers/tpm/tpm2_tis_spi.c b/drivers/tpm/tpm2_tis_spi.c
index 36016de..9a8145e 100644
--- a/drivers/tpm/tpm2_tis_spi.c
+++ b/drivers/tpm/tpm2_tis_spi.c
@@ -676,7 +676,7 @@
static const struct udevice_id tpm_tis_spi_ids[] = {
{
- .compatible = "tis,tpm2-spi",
+ .compatible = "tcg,tpm_tis-spi",
.data = (ulong)&tpm_tis_std_chip_data,
},
{ }