can: tcan4x5x: add {wr,rd}_table

The memory space of the chip is not fully populated, so add a regmap range
table to document this.

Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-15-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/m_can/tcan4x5x-regmap.c b/drivers/net/can/m_can/tcan4x5x-regmap.c
index f113881fb0126ba2e400dd81a67d8e25e8494e36..5ea1625786194ee12fb5674313a4b2fcf83d3d51 100644 (file)
--- a/drivers/net/can/m_can/tcan4x5x-regmap.c
+++ b/drivers/net/can/m_can/tcan4x5x-regmap.c
@@ -53,10 +53,24 @@ static int tcan4x5x_regmap_read(void *context,
        return spi_write_then_read(spi, &addr, reg_size, (u32 *)val, val_size);
 }
 
+static const struct regmap_range tcan4x5x_reg_table_yes_range[] = {
+       regmap_reg_range(0x0000, 0x002c),       /* Device ID and SPI Registers */
+       regmap_reg_range(0x0800, 0x083c),       /* Device configuration registers and Interrupt Flags*/
+       regmap_reg_range(0x1000, 0x10fc),       /* M_CAN */
+       regmap_reg_range(0x8000, 0x87fc),       /* MRAM */
+};
+
+static const struct regmap_access_table tcan4x5x_reg_table = {
+       .yes_ranges = tcan4x5x_reg_table_yes_range,
+       .n_yes_ranges = ARRAY_SIZE(tcan4x5x_reg_table_yes_range),
+};
+
 static const struct regmap_config tcan4x5x_regmap = {
        .reg_bits = 32,
        .reg_stride = 4,
        .val_bits = 32,
+       .wr_table = &tcan4x5x_reg_table,
+       .rd_table = &tcan4x5x_reg_table,
        .cache_type = REGCACHE_NONE,
        .max_register = TCAN4X5X_MAX_REGISTER,
 };