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drivers: spi: update misc register programming

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Update the misc register programming for T264
for slave.

Bug 4711327

Change-Id: Ia6409bbee66e9984f83ad792d67c730fa637f58d
Signed-off-by: Vishwaroop A <va@nvidia.com>
This commit is contained in:
Vishwaroop A
2024-07-03 08:22:48 +00:00
committed by Jon Hunter
parent 7789bd9c0a
commit e147027277
1 changed files with 34 additions and 2 deletions
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36
drivers/spi/spi-tegra124-slave.c
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@@ -136,6 +136,10 @@
#define SPI_INTR_CS_MASK BIT(31)
#define SPI_MISC_REG 0x194
#define SPI_MISC_FIFO_REG_RX_FIFO_RD_CLK BIT(26)
#define SPI_MISC_FIFO_REG_TX_FIFO_RD_CLK BIT(27)
#define SPI_MISC_ASYNC_STATUS_FIFO_RD_CLK BIT(28)
#define SPI_MISC_RX_PM_ASYNC_FIFO_RD_CLK BIT(29)
#define SPI_MISC_EXT_CLK_EN BIT(30)
#define SPI_MISC_CLKEN_OVERRIDE BIT(31)
@@ -249,6 +253,7 @@ struct tegra_spi_chip_data {
bool intr_mask_reg;
bool mask_cs_inactive_intr;
bool new_features;
bool misc_reg_update;
};
struct tegra_spi_platform_data {
@@ -828,15 +833,29 @@ static inline int tegra_spi_ext_clk_enable(bool enable,
unsigned long misc_reg = 0;
int ret = 0;
if (tspi->chip_data->new_features) {
if (tspi->chip_data->new_features && tspi->chip_data->misc_reg_update) {
/* Enable external clock bit in SPI_MISC_REG */
if (enable)
misc_reg |= (SPI_MISC_FIFO_REG_TX_FIFO_RD_CLK |
SPI_MISC_RX_PM_ASYNC_FIFO_RD_CLK |
SPI_MISC_EXT_CLK_EN |
SPI_MISC_CLKEN_OVERRIDE) ;
else
misc_reg &= ~(SPI_MISC_FIFO_REG_TX_FIFO_RD_CLK |
SPI_MISC_RX_PM_ASYNC_FIFO_RD_CLK |
SPI_MISC_EXT_CLK_EN |
SPI_MISC_CLKEN_OVERRIDE);
tegra_spi_writel(tspi, misc_reg, SPI_MISC_REG);
} else {
if (enable)
misc_reg |= SPI_MISC_EXT_CLK_EN;
else
misc_reg &= (~SPI_MISC_EXT_CLK_EN);
misc_reg &= ~SPI_MISC_EXT_CLK_EN;
tegra_spi_writel(tspi, misc_reg, SPI_MISC_REG);
}
return ret;
}
static int tegra_spi_start_dma_based_transfer(struct
@@ -1921,18 +1940,28 @@ static struct tegra_spi_chip_data tegra124_spi_chip_data = {
.intr_mask_reg = false,
.mask_cs_inactive_intr = true,
.new_features = false,
.misc_reg_update = false,
};
static struct tegra_spi_chip_data tegra210_spi_chip_data = {
.intr_mask_reg = true,
.mask_cs_inactive_intr = false,
.new_features = false,
.misc_reg_update = false,
};
static struct tegra_spi_chip_data tegra186_spi_chip_data = {
.intr_mask_reg = true,
.mask_cs_inactive_intr = false,
.new_features = true,
.misc_reg_update = false,
};
static struct tegra_spi_chip_data tegra264_spi_chip_data = {
.intr_mask_reg = true,
.mask_cs_inactive_intr = false,
.new_features = true,
.misc_reg_update = true,
};
static const struct of_device_id tegra_spi_of_match[] = {
@@ -1945,6 +1974,9 @@ static const struct of_device_id tegra_spi_of_match[] = {
}, {
.compatible = "nvidia,tegra186-spi-slave",
.data = &tegra186_spi_chip_data,
},{
.compatible = "nvidia,tegra264-spi-slave",
.data = &tegra264_spi_chip_data,
},
{}
};