diff options
| author | Lukasz Majewski <lukma@denx.de> | 2019-09-05 10:54:58 +0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-10-08 17:36:36 +0300 |
| commit | ec0c81f8edb81de9ab7ad50150ee634d36cbcf9c (patch) | |
| tree | c6d350d88d3136c40931dfcac80de6c869230b2b /drivers/spi | |
| parent | c2050e10e11b7226f01aa18d49b9d4a2322723ca (diff) | |
| download | u-boot-ec0c81f8edb81de9ab7ad50150ee634d36cbcf9c.tar.xz | |
spi: Add support for SPL_OF_PLATDATA to mxs_spi.c driver
After this patch the mxs_spi.c DM/DTS driver can be used at early SPL to
read payload from SPI-NOR memories.
It was necessary to adjust its name to 'fsl_imx_2{38}_spi' to match
requirements for SPL_OF_PLATDATA usage.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/mxs_spi.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/drivers/spi/mxs_spi.c b/drivers/spi/mxs_spi.c index d475830f17..58b1c67a19 100644 --- a/drivers/spi/mxs_spi.c +++ b/drivers/spi/mxs_spi.c @@ -57,7 +57,18 @@ static inline struct mxs_spi_slave *to_mxs_slave(struct spi_slave *slave) #else #include <dm.h> #include <errno.h> +#include <dt-structs.h> + +#ifdef CONFIG_MX28 +#define dtd_fsl_imx_spi dtd_fsl_imx28_spi +#else /* CONFIG_MX23 */ +#define dtd_fsl_imx_spi dtd_fsl_imx23_spi +#endif + struct mxs_spi_platdata { +#if CONFIG_IS_ENABLED(OF_PLATDATA) + struct dtd_fsl_imx_spi dtplat; +#endif s32 frequency; /* Default clock frequency, -1 for none */ fdt_addr_t base; /* SPI IP block base address */ int num_cs; /* Number of CSes supported */ @@ -430,11 +441,26 @@ static int mxs_spi_probe(struct udevice *bus) int ret; debug("%s: probe\n", __func__); + +#if CONFIG_IS_ENABLED(OF_PLATDATA) + struct dtd_fsl_imx_spi *dtplat = &plat->dtplat; + struct phandle_1_arg *p1a = &dtplat->clocks[0]; + + priv->regs = (struct mxs_ssp_regs *)dtplat->reg[0]; + priv->dma_channel = dtplat->dmas[1]; + priv->clk_id = p1a->arg[0]; + priv->max_freq = dtplat->spi_max_frequency; + plat->num_cs = dtplat->num_cs; + + debug("OF_PLATDATA: regs: 0x%x max freq: %d clkid: %d\n", + (unsigned int)priv->regs, priv->max_freq, priv->clk_id); +#else priv->regs = (struct mxs_ssp_regs *)plat->base; priv->max_freq = plat->frequency; priv->dma_channel = plat->dma_id; priv->clk_id = plat->clk_id; +#endif mxs_reset_block(&priv->regs->hw_ssp_ctrl0_reg); @@ -571,16 +597,20 @@ static int mxs_ofdata_to_platdata(struct udevice *bus) return 0; } -#endif static const struct udevice_id mxs_spi_ids[] = { { .compatible = "fsl,imx23-spi" }, { .compatible = "fsl,imx28-spi" }, { } }; +#endif U_BOOT_DRIVER(mxs_spi) = { - .name = "mxs_spi", +#ifdef CONFIG_MX28 + .name = "fsl_imx28_spi", +#else /* CONFIG_MX23 */ + .name = "fsl_imx23_spi", +#endif .id = UCLASS_SPI, #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) .of_match = mxs_spi_ids, |