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tpm2: tis_spi: add linux compatible fallback string

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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>
This commit is contained in:
Bruno Thomsen
2020-06-12 17:17:33 +02:00
committed by Tom Rini
parent 186529953f
commit 78cc3fcf08
2 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt
View File

@@ -2,7 +2,7 @@ ST33TPHF20 SPI TPMv2.0 bindings
-------------------------------
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 @@ Optional properties:
Example:
tpm@1 {
compatible = "tis,tpm2-spi";
compatible = "tcg,tpm_tis-spi";
reg = <1>;
spi-max-frequency = <10000000>;
};

2
drivers/tpm/tpm2_tis_spi.c
View File

@@ -676,7 +676,7 @@ static const struct tpm_tis_chip_data tpm_tis_std_chip_data = {
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,
},
{ }