diff options
| author | Michael Niewöhner <foss@mniewoehner.de> | 2020-07-19 18:43:27 +0200 |
|---|---|---|
| committer | Michael Niewöhner <c0d3z3r0@review.coreboot.org> | 2020-08-30 21:10:13 +0000 |
| commit | f0b6b30c46049e9849474965c87c83e7540e25dc (patch) | |
| tree | fa029b677359901f9957126b4c40340323dfb1a0 /src/mainboard/system76/lemp9/gpio.h | |
| parent | 803bd3c68272c61bf18b62de3779aab3f217fe6d (diff) | |
mb/system76/lemp9: enable TPM
L140CU has a TPM2 connected via SPI. Add the TPM device to the
devicetree and enable it.
According to Intel doc#615170-001, PIRQ is required for SPI TPM to work.
Since the TPM is connected to GPP_A7, enable NF1 (PIRQA#) and set it as
TPM interrupt in Kconfig.
Note: The PCH maps either LPC TPM or SPI TPM to the same address and
handles either LPC or SPI communication transparently. Thus we can use
MAINBOARD_HAS_LPC_TPM here, which implements TPM via that address.
Tested, but only polling works currently, because there is some upstream
issue with the tpm_tis module in current Linux kernels. [1]
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1770021
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: I26d3b396fe1e99368e18fd3a6a9f02e3585b9f6e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43641
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/system76/lemp9/gpio.h')
| -rw-r--r-- | src/mainboard/system76/lemp9/gpio.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/system76/lemp9/gpio.h b/src/mainboard/system76/lemp9/gpio.h index d06145d1a9..8e86647d52 100644 --- a/src/mainboard/system76/lemp9/gpio.h +++ b/src/mainboard/system76/lemp9/gpio.h @@ -76,8 +76,8 @@ static const struct pad_config gpio_table[] = { PAD_CFG_NF(GPP_A6, NONE, DEEP, NF1), // GSPI0 - // TODO - TPM_PIRQ# - PAD_CFG_NC(GPP_A7), + // PIRQA# / TPM_PIRQ# + PAD_CFG_NF(GPP_A7, NONE, DEEP, NF1), // LPC // PM_CLKRUN# with pull-up |