diff options
| -rw-r--r-- | chip/g/sps.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/chip/g/sps.c b/chip/g/sps.c index 6a78c5f7d5..d6d23e1d03 100644 --- a/chip/g/sps.c +++ b/chip/g/sps.c @@ -185,6 +185,20 @@ static void sps_configure(enum sps_mode mode, enum spi_clock_mode clk_mode, /* xfer 0xff when tx fifo is empty */ GREG32(SPS, DUMMY_WORD) = GC_SPS_DUMMY_WORD_DEFAULT; + if (!GREAD_FIELD(SPS, VAL, CSB)) { + /* + * Reset while the external controller is mid SPI + * transaction. + */ + ccprintf("%s: reset while CS active\n", __func__); + /* + * Wait for external controller to deassert CS before + * continuing. + */ + while (!GREAD_FIELD(SPS, VAL, CSB)) + ; + } + /* [5,4,3] [2,1,0] * RX{DIS, EN, RST} TX{DIS, EN, RST} */ |