Lars Povlsen writes:

The Sparx5 mux driver may be used to control selecting between two
alternate SPI bus segments connected to the SPI controller
(spi-dw-mmio).

Signed-off-by: Lars Povlsen <redacted>
---
 drivers/mux/Makefile     |   2 +
 drivers/mux/sparx5-spi.c | 138 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 140 insertions(+)
 create mode 100644 drivers/mux/sparx5-spi.c

...

+
+#define SPARX5_MAX_CS	16
+
+struct mux_sparx5 {
+	struct regmap *syscon;
+	u8 bus[SPARX5_MAX_CS];
+	int cur_bus;
+};

Yeah, "cur_bus" is a leftover. I'll remove it.

-- 
Lars Povlsen,
Microchip