diff options
| author | Mengqi Zhang <Mengqi.Zhang@mediatek.com> | 2019-04-24 11:11:52 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-06-21 08:38:41 +0000 |
| commit | 026be3d76f3934eb901485acd98e0d84f137068f (patch) | |
| tree | c269b874ad1fccd60889cc0fac94dd1f746608a7 /src/soc/mediatek/common | |
| parent | 89b1753c2289edacca05ef46e840f212f2a3025d (diff) | |
mediatek: Add SPI tick_dly setting
Add spi tick_dly setting for high-speed spi xfer.
BUG=b:80501386
BRANCH=none
TEST=emerge-kukui coreboot; emerge-elm coreboot
Change-Id: Ie49fc3efe2a4a6dcdf2a2fc4c91b47e35d4f086e
Signed-off-by: Mengqi Zhang <Mengqi.Zhang@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32461
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/soc/mediatek/common')
| -rw-r--r-- | src/soc/mediatek/common/include/soc/spi_common.h | 5 | ||||
| -rw-r--r-- | src/soc/mediatek/common/spi.c | 4 |
2 files changed, 5 insertions, 4 deletions
diff --git a/src/soc/mediatek/common/include/soc/spi_common.h b/src/soc/mediatek/common/include/soc/spi_common.h index 162db59f94..81a9098180 100644 --- a/src/soc/mediatek/common/include/soc/spi_common.h +++ b/src/soc/mediatek/common/include/soc/spi_common.h @@ -84,8 +84,9 @@ extern struct mtk_spi_bus spi_bus[]; void mtk_spi_set_gpio_pinmux(unsigned int bus, enum spi_pad_mask pad_select); -void mtk_spi_set_timing(struct mtk_spi_regs *regs, u32 sck_ticks, u32 cs_ticks); +void mtk_spi_set_timing(struct mtk_spi_regs *regs, u32 sck_ticks, u32 cs_ticks, + unsigned int tick_dly); void mtk_spi_init(unsigned int bus, enum spi_pad_mask pad_select, - unsigned int speed_hz); + unsigned int speed_hz, unsigned int tick_dly); #endif diff --git a/src/soc/mediatek/common/spi.c b/src/soc/mediatek/common/spi.c index 71ed95a228..1af6f105c3 100644 --- a/src/soc/mediatek/common/spi.c +++ b/src/soc/mediatek/common/spi.c @@ -53,7 +53,7 @@ static void spi_sw_reset(struct mtk_spi_regs *regs) } void mtk_spi_init(unsigned int bus, enum spi_pad_mask pad_select, - unsigned int speed_hz) + unsigned int speed_hz, unsigned int tick_dly) { u32 div, sck_ticks, cs_ticks; @@ -73,7 +73,7 @@ void mtk_spi_init(unsigned int bus, enum spi_pad_mask pad_select, printk(BIOS_DEBUG, "SPI%u(PAD%u) initialized at %u Hz\n", bus, pad_select, SPI_HZ / (sck_ticks * 2)); - mtk_spi_set_timing(regs, sck_ticks, cs_ticks); + mtk_spi_set_timing(regs, sck_ticks, cs_ticks, tick_dly); clrsetbits_le32(®s->spi_cmd_reg, (SPI_CMD_CPHA_EN | SPI_CMD_CPOL_EN | |