Messages in this thread Patch in this message | | | From | Chris Packham <> | Subject | [PATCH 2/2] spi: spi-mem: fallback to using transfers when CS gpios are used | Date | Thu, 7 Nov 2019 17:42:35 +1300 |
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Devices with chip selects driven via GPIO are not compatible with the spi-mem operations. Fallback to using standard spi transfers when the device is connected with a gpio CS.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> --- drivers/spi/spi-mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 9f0fa9f3116d..e5a46f0eb93b 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -286,7 +286,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) if (!spi_mem_internal_supports_op(mem, op)) return -ENOTSUPP; - if (ctlr->mem_ops) { + if (ctlr->mem_ops && !mem->spi->cs_gpiod) { ret = spi_mem_access_start(mem); if (ret) return ret; -- 2.24.0
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