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spi: cadence-quadspi: Add support for StarFive JH7110 QSPI

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Add QSPI reset operation in device probe and add RISCV support to
QUAD SPI Kconfig.

Co-developed-by: Ziv Xu <ziv.xu@starfivetech.com>
Signed-off-by: Ziv Xu <ziv.xu@starfivetech.com>
Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Link: https://lore.kernel.org/r/20230302105221.197421-3-william.qiu@starfivetech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
William Qiu 2023-03-02 18:52:21 +08:00 committed by Mark Brown
parent 13f1033e07
commit 47fef94afe
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
2 changed files with 21 additions and 2 deletions
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2
drivers/spi/Kconfig
View file

@ -239,7 +239,7 @@ config SPI_CADENCE
config SPI_CADENCE_QUADSPI
tristate "Cadence Quad SPI controller"
depends on OF && (ARM || ARM64 || X86 || COMPILE_TEST)
depends on OF && (ARM || ARM64 || X86 || RISCV || COMPILE_TEST)
help
Enable support for the Cadence Quad SPI Flash controller.

21
drivers/spi/spi-cadence-quadspi.c
View file

@ -1615,7 +1615,7 @@ static int cqspi_setup_flash(struct cqspi_st *cqspi)
static int cqspi_probe(struct platform_device *pdev)
{
const struct cqspi_driver_platdata *ddata;
struct reset_control *rstc, *rstc_ocp;
struct reset_control *rstc, *rstc_ocp, *rstc_ref;
struct device *dev = &pdev->dev;
struct spi_master *master;
struct resource *res_ahb;
@ -1705,6 +1705,17 @@ static int cqspi_probe(struct platform_device *pdev)
goto probe_reset_failed;
}
if (of_device_is_compatible(pdev->dev.of_node, "starfive,jh7110-qspi")) {
rstc_ref = devm_reset_control_get_optional_exclusive(dev, "rstc_ref");
if (IS_ERR(rstc_ref)) {
ret = PTR_ERR(rstc_ref);
dev_err(dev, "Cannot get QSPI REF reset.\n");
goto probe_reset_failed;
}
reset_control_assert(rstc_ref);
reset_control_deassert(rstc_ref);
}
reset_control_assert(rstc);
reset_control_deassert(rstc);
@ -1859,6 +1870,10 @@ static const struct cqspi_driver_platdata versal_ospi = {
.get_dma_status = cqspi_get_versal_dma_status,
};
static const struct cqspi_driver_platdata jh7110_qspi = {
.quirks = CQSPI_DISABLE_DAC_MODE,
};
static const struct of_device_id cqspi_dt_ids[] = {
{
.compatible = "cdns,qspi-nor",
@ -1884,6 +1899,10 @@ static const struct of_device_id cqspi_dt_ids[] = {
.compatible = "intel,socfpga-qspi",
.data = &socfpga_qspi,
},
{
.compatible = "starfive,jh7110-qspi",
.data = &jh7110_qspi,
},
{ /* end of table */ }
};