diff options
| author | Marc Jones <marc.jones@scarletltd.com> | 2018-05-01 14:30:48 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-05-02 20:49:20 +0000 |
| commit | a44900a24ba1c6730caaa8940b01de2dcccebe3e (patch) | |
| tree | 2354011b26c3e394bc50b0b6f4dc34ae1d700ddd /src/mainboard | |
| parent | 12deac1421b4832b8a63da8dea5da7f5d11ea263 (diff) | |
google/kahlee: Set SPI 100 MHz and SPI Dual Read IO mode
Set SPI Fast Read to 100MHz and Dual Read IO mode to speed up
the boot process by over a half second. Also, increase the Normal
Read speed to 33MHz as supported by the W25Q128FW.
BUG=b:70558952
TEST=Run cbmem -t to get boot times.
Change-Id: I616a96526ed90bb4ab0c9c6b78787799faa02633
Signed-off-by: Marc Jones <marc.jones@scarletltd.com>
Reviewed-on: https://review.coreboot.org/25970
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/kahlee/bootblock/bootblock.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/mainboard/google/kahlee/bootblock/bootblock.c b/src/mainboard/google/kahlee/bootblock/bootblock.c index 577c105f9e..aac1d955d9 100644 --- a/src/mainboard/google/kahlee/bootblock/bootblock.c +++ b/src/mainboard/google/kahlee/bootblock/bootblock.c @@ -34,9 +34,17 @@ void bootblock_mainboard_early_init(void) void bootblock_mainboard_init(void) { + /* + * W25Q128FW Setup + * Normal Read 40MHz + * Fast Read 104MHz + * Dual Read IO (1-2-2) + */ + sb_read_mode(SPI_READ_MODE_DUAL122); + /* Set SPI speeds before verstage. Needed for TPM */ - sb_set_spi100(SPI_SPEED_22M, /* Normal */ - SPI_SPEED_66M, /* Fast */ + sb_set_spi100(SPI_SPEED_33M, /* Normal */ + SPI_SPEED_100M, /* Fast */ SPI_SPEED_66M, /* AltIO */ SPI_SPEED_66M); /* TPM */ |