spi: aspeed: Fix window offset of CE1

The offset value of the mapping window in the kernel structure is
calculated using the value of the previous window offset. This doesn't
reflect how the HW is configured and can lead to erroneous setting of
the second flash device (CE1).

Cc: Chin-Ting Kuo <[email protected]>
Fixes: e3228ed ("spi: spi-mem: Convert Aspeed SMC driver to spi-mem")
Signed-off-by: Cédric Le Goater <[email protected]>
Reviewed-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: legoater

drivers/spi/spi-aspeed-smc.c

@@ -398,7 +398,7 @@ static void aspeed_spi_get_windows(struct aspeed_spi *aspi,
 		windows[cs].cs = cs;
 		windows[cs].size = data->segment_end(aspi, reg_val) -
 			data->segment_start(aspi, reg_val);
-		windows[cs].offset = cs ? windows[cs - 1].offset + windows[cs - 1].size : 0;
+		windows[cs].offset = data->segment_start(aspi, reg_val) - aspi->ahb_base_phy;
 		dev_vdbg(aspi->dev, "CE%d offset=0x%.8x size=0x%x\n", cs,
 			 windows[cs].offset, windows[cs].size);
 	}