Unverified Commit 1e293574 authored by Santhosh Kumar K's avatar Santhosh Kumar K Committed by Mark Brown
Browse files

spi: cadence-quadspi: Enable SPI_TX_QUAD 



Enable the SPI_TX_QUAD mode bit in the host->mode_bits to support
data transmission over four lines to improve the performance.

Tested the functionality on AM62Lx EVM (W25N01JW) in 1S-4S-4S mode.

Signed-off-by: default avatarSanthosh Kumar K <s-k6@ti.com>
Link: https://patch.msgid.link/20250102120544.1407152-1-s-k6@ti.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent be92ab2d

drivers/spi/spi-cadence-quadspi.c

+4 −1
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ static_assert(CQSPI_MAX_CHIPSELECT <= SPI_CS_CNT_MAX); 


/* Capabilities */

#define CQSPI_SUPPORTS_OCTAL		BIT(0)

#define CQSPI_SUPPORTS_QUAD		BIT(1)



#define CQSPI_OP_WIDTH(part) ((part).nbytes ? ilog2((part).buswidth) : 0)
@@ -1888,6 +1889,8 @@ static int cqspi_probe(struct platform_device *pdev) 
						cqspi->master_ref_clk_hz);

		if (ddata->hwcaps_mask & CQSPI_SUPPORTS_OCTAL)

			host->mode_bits |= SPI_RX_OCTAL | SPI_TX_OCTAL;

		if (ddata->hwcaps_mask & CQSPI_SUPPORTS_QUAD)

			host->mode_bits |= SPI_TX_QUAD;

		if (!(ddata->quirks & CQSPI_DISABLE_DAC_MODE)) {

			cqspi->use_direct_mode = true;

			cqspi->use_direct_mode_wr = true;
@@ -2062,7 +2065,7 @@ static const struct cqspi_driver_platdata k2g_qspi = { 
};



static const struct cqspi_driver_platdata am654_ospi = {

	.hwcaps_mask = CQSPI_SUPPORTS_OCTAL,

	.hwcaps_mask = CQSPI_SUPPORTS_OCTAL | CQSPI_SUPPORTS_QUAD,

	.quirks = CQSPI_NEEDS_WR_DELAY,

};