commit bd3ce6fc64f22d3e62634d8763f2355b6095d45b
author Chris Packham <judge.packham@gmail.com> Mon Jul 10 10:47:34 2023 +1200
committer Stefan Roese <sr@denx.de> Thu Jul 13 10:26:27 2023 +0200
tree a7210e9e28f8a1078dc184347dce7fb7e550be25
parent 01be6721f6d4d5be999146e98e794b7c5bf1b464

mtd: nand: pxa3xx: Add support for the Marvell AC5 SoC

The NAND flash controller (NFC) on the AC5/AC5X SoC is the same as
the NFC used on other Marvell SoCs. It does have the additional
restriction of only supporting SDR timing modes up to 3.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>

drivers/mtd/nand/raw/pxa3xx_nand.c

diff --git a/drivers/mtd/nand/raw/pxa3xx_nand.c b/drivers/mtd/nand/raw/pxa3xx_nand.c
index fcd1b9c..9dee580 100644
--- a/drivers/mtd/nand/raw/pxa3xx_nand.c
+++ b/drivers/mtd/nand/raw/pxa3xx_nand.c
@@ -167,6 +167,7 @@
 	PXA3XX_NAND_VARIANT_PXA,
 	PXA3XX_NAND_VARIANT_ARMADA370,
 	PXA3XX_NAND_VARIANT_ARMADA_8K,
+	PXA3XX_NAND_VARIANT_AC5,
 };
 
 struct pxa3xx_nand_host {
@@ -391,6 +392,10 @@
 		.compatible = "marvell,armada-8k-nand-controller",
 		.data = PXA3XX_NAND_VARIANT_ARMADA_8K,
 	},
+	{
+		.compatible = "marvell,mvebu-ac5-pxa3xx-nand",
+		.data = PXA3XX_NAND_VARIANT_AC5,
+	},
 	{}
 };
 
@@ -505,6 +510,9 @@
 		if (mode < 0)
 			mode = 0;
 
+		if (info->variant == PXA3XX_NAND_VARIANT_AC5)
+			mode = min(mode, 3);
+
 		timings = onfi_async_timing_mode_to_sdr_timings(mode);
 		if (IS_ERR(timings))
 			return PTR_ERR(timings);
@@ -730,7 +738,8 @@
 
 		/* NDCB3 register is available in NFCv2 (Armada 370/XP SoC) */
 		if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
-			info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K)
+			info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K ||
+			info->variant == PXA3XX_NAND_VARIANT_AC5)
 			nand_writel(info, NDCB0, info->ndcb3);
 	}
 
@@ -1579,7 +1588,8 @@
 
 	/* Device detection must be done with ECC disabled */
 	if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
-		info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K)
+		info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K ||
+		info->variant == PXA3XX_NAND_VARIANT_AC5)
 		nand_writel(info, NDECCCTRL, 0x0);
 
 	if (nand_scan_ident(mtd, 1, NULL))
@@ -1630,7 +1640,8 @@
 	 */
 	if (mtd->writesize > info->chunk_size) {
 		if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
-			info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K) {
+			info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K ||
+			info->variant == PXA3XX_NAND_VARIANT_AC5) {
 			chip->cmdfunc = nand_cmdfunc_extended;
 		} else {
 			dev_err(mtd->dev,