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spi: spi-fsl-dspi: Reinitialize DSPI regs after resuming for S32G

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After resuming, DSPI registers (MCR and SR) need to be reinitialized for
S32G platforms.

Signed-off-by: Larisa Grigore <larisa.grigore@nxp.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Link: https://patch.msgid.link/20250522-james-nxp-spi-v2-10-bea884630cfb@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Larisa Grigore 2025-05-22 15:51:39 +01:00 committed by Mark Brown
parent 870d6fda18
commit c5412ec5f6
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GPG Key ID: 24D68B725D5487D0
1 changed files with 42 additions and 35 deletions
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77
drivers/spi/spi-fsl-dspi.c
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@ -1284,41 +1284,6 @@ static const struct of_device_id fsl_dspi_dt_ids[] = {
};
MODULE_DEVICE_TABLE(of, fsl_dspi_dt_ids);
#ifdef CONFIG_PM_SLEEP
static int dspi_suspend(struct device *dev)
{
struct fsl_dspi *dspi = dev_get_drvdata(dev);
if (dspi->irq)
disable_irq(dspi->irq);
spi_controller_suspend(dspi->ctlr);
clk_disable_unprepare(dspi->clk);
pinctrl_pm_select_sleep_state(dev);
return 0;
}
static int dspi_resume(struct device *dev)
{
struct fsl_dspi *dspi = dev_get_drvdata(dev);
int ret;
pinctrl_pm_select_default_state(dev);
ret = clk_prepare_enable(dspi->clk);
if (ret)
return ret;
spi_controller_resume(dspi->ctlr);
if (dspi->irq)
enable_irq(dspi->irq);
return 0;
}
#endif /* CONFIG_PM_SLEEP */
static SIMPLE_DEV_PM_OPS(dspi_pm, dspi_suspend, dspi_resume);
static int dspi_init(struct fsl_dspi *dspi)
{
unsigned int mcr;
@ -1354,6 +1319,48 @@ static int dspi_init(struct fsl_dspi *dspi)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int dspi_suspend(struct device *dev)
{
struct fsl_dspi *dspi = dev_get_drvdata(dev);
if (dspi->irq)
disable_irq(dspi->irq);
spi_controller_suspend(dspi->ctlr);
clk_disable_unprepare(dspi->clk);
pinctrl_pm_select_sleep_state(dev);
return 0;
}
static int dspi_resume(struct device *dev)
{
struct fsl_dspi *dspi = dev_get_drvdata(dev);
int ret;
pinctrl_pm_select_default_state(dev);
ret = clk_prepare_enable(dspi->clk);
if (ret)
return ret;
spi_controller_resume(dspi->ctlr);
ret = dspi_init(dspi);
if (ret) {
dev_err(dev, "failed to initialize dspi during resume\n");
return ret;
}
if (dspi->irq)
enable_irq(dspi->irq);
return 0;
}
#endif /* CONFIG_PM_SLEEP */
static SIMPLE_DEV_PM_OPS(dspi_pm, dspi_suspend, dspi_resume);
static int dspi_target_abort(struct spi_controller *host)
{
struct fsl_dspi *dspi = spi_controller_get_devdata(host);