The memory space of the chip is not fully populated, so add a regmap range
table to document this.
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
drivers/net/can/m_can/tcan4x5x-regmap.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/net/can/m_can/tcan4x5x-regmap.c b/drivers/net/can/m_can/tcan4x5x-regmap.c
index f113881fb012..5ea162578619 100644
--- 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,
};
--
2.29.2
