Hi Vignesh,
How about something like this, naming and so on shamelessly stolen from the linux kernel:
Index: u-boot-2016.05/drivers/spi/omap3_spi.c =================================================================== --- u-boot-2016.05.orig/drivers/spi/omap3_spi.c 2016-05-16 16:40:32.000000000 +0200 +++ u-boot-2016.05/drivers/spi/omap3_spi.c 2016-05-18 13:46:18.810353297 +0200 @@ -35,6 +35,12 @@ #define OMAP3_MCSPI4_BASE 0x480BA000 #endif
+#define OMAP4_MCSPI_REG_OFFSET 0x100 + +struct omap2_mcspi_platform_config { + unsigned int regs_offset; +}; + /* per-register bitmasks */ #define OMAP3_MCSPI_SYSCONFIG_SMARTIDLE (2 << 3) #define OMAP3_MCSPI_SYSCONFIG_ENAWAKEUP BIT(2) @@ -623,7 +629,10 @@ const void *blob = gd->fdt_blob; int node = dev->of_offset;
- priv->regs = (struct mcspi *)dev_get_addr(dev); + struct omap2_mcspi_platform_config* data = + (struct omap2_mcspi_platform_config*)dev_get_driver_data(dev); + + priv->regs = (struct mcspi *)(dev_get_addr(dev) + data->regs_offset); priv->pin_dir = fdtdec_get_uint(blob, node, "ti,pindir-d0-out-d1-in", MCSPI_PINDIR_D0_IN_D1_OUT); priv->wordlen = SPI_DEFAULT_WORDLEN; @@ -662,9 +671,17 @@ */ };
+static struct omap2_mcspi_platform_config omap2_pdata = { + .regs_offset = 0, +}; + +static struct omap2_mcspi_platform_config omap4_pdata = { + .regs_offset = OMAP4_MCSPI_REG_OFFSET, +}; + static const struct udevice_id omap3_spi_ids[] = { - { .compatible = "ti,omap2-mcspi" }, - { .compatible = "ti,omap4-mcspi" }, + { .compatible = "ti,omap2-mcspi", .data = (ulong)&omap2_pdata }, + { .compatible = "ti,omap4-mcspi", .data = (ulong)&omap4_pdata }, { } };
Best regards, Martin Hejnfelt