From a44900a24ba1c6730caaa8940b01de2dcccebe3e Mon Sep 17 00:00:00 2001 From: Marc Jones Date: Tue, 1 May 2018 14:30:48 -0600 Subject: 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 Reviewed-on: https://review.coreboot.org/25970 Tested-by: build bot (Jenkins) Reviewed-by: Marshall Dawson Reviewed-by: Martin Roth --- src/mainboard/google/kahlee/bootblock/bootblock.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'src/mainboard/google/kahlee/bootblock') 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 */ -- cgit v1.2.3