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Diffstat (limited to 'src/drivers/spi')
| -rw-r--r-- | src/drivers/spi/tpm/tpm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/drivers/spi/tpm/tpm.c b/src/drivers/spi/tpm/tpm.c index fd924f4246..29b85c4716 100644 --- a/src/drivers/spi/tpm/tpm.c +++ b/src/drivers/spi/tpm/tpm.c @@ -121,6 +121,12 @@ static int start_transaction(int read_write, size_t bytes, unsigned addr) */ mdelay(10); + /* Try to wake cr50 if it is asleep. */ + tpm_if.cs_assert(&tpm_if.slave); + udelay(1); + tpm_if.cs_deassert(&tpm_if.slave); + udelay(100); + /* * The first byte of the frame header encodes the transaction type * (read or write) and transfer size (set to lentgh - 1), limited to |