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src/soc/intel/common: Configure the gspi chip select state correctly 

This implementation updates the chip select control register
programming in gspi controller setup call to program the correct
bit fields for chip select state.

Change-Id: Ifab37b0003f09a680024d5b155ab0bb157920a53
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-on: https://review.coreboot.org/27889
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Aamir Bohra 2018-08-07 12:16:09 +05:30 committed by Subrata Banik
parent 94e2ec7253
commit c7b23e9dc8
1 changed files with 1 additions and 4 deletions
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5
src/soc/intel/common/block/gspi/gspi.c
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@ -481,12 +481,9 @@ static int gspi_ctrlr_setup(const struct spi_slave *dev)
cs_ctrl = CS_MODE_SW | CS_0; cs_ctrl = CS_MODE_SW | CS_0;
pol = gspi_csctrl_polarity(cfg.cs_polarity); pol = gspi_csctrl_polarity(cfg.cs_polarity);
cs_ctrl |= pol << CS_0_POL_SHIFT; cs_ctrl |= pol << CS_0_POL_SHIFT;
cs_ctrl |= gspi_csctrl_state(pol, CS_DEASSERT); cs_ctrl |= gspi_csctrl_state(pol, CS_DEASSERT) << CS_STATE_SHIFT;
gspi_write_mmio_reg(p, SPI_CS_CONTROL, cs_ctrl); gspi_write_mmio_reg(p, SPI_CS_CONTROL, cs_ctrl);
/* De-assert chip select. */
__gspi_cs_change(p, CS_DEASSERT);
/* Disable SPI controller. */ /* Disable SPI controller. */
gspi_write_mmio_reg(p, SSCR0, SSCR0_SSE_DISABLE); gspi_write_mmio_reg(p, SSCR0, SSCR0_SSE_DISABLE);