mtd: spi-nor: spansion: add support for S28HS02GT

Add support for S28HS02GT. Infineon S28HS02GT is a 2Gb,
multi-chip package, Octal SPI Flash.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Link: https://lore.kernel.org/r/20230726075257.12985-9-tudor.ambarus@linaro.org
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>

Author: Kuwano-san

drivers/mtd/spi-nor/spansion.c

@@ -693,30 +693,35 @@ static int cypress_nor_set_octal_dtr(struct spi_nor *nor, bool enable)
 
 static int s28hx_t_post_sfdp_fixup(struct spi_nor *nor)
 {
+	struct spi_nor_flash_parameter *params = nor->params;
 	/*
 	 * On older versions of the flash the xSPI Profile 1.0 table has the
 	 * 8D-8D-8D Fast Read opcode as 0x00. But it actually should be 0xEE.
 	 */
-	if (nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode == 0)
-		nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode =
+	if (params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode == 0)
+		params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode =
 			SPINOR_OP_CYPRESS_RD_FAST;
 
 	/* This flash is also missing the 4-byte Page Program opcode bit. */
-	spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP],
+	spi_nor_set_pp_settings(&params->page_programs[SNOR_CMD_PP],
 				SPINOR_OP_PP_4B, SNOR_PROTO_1_1_1);
 	/*
 	 * Since xSPI Page Program opcode is backward compatible with
 	 * Legacy SPI, use Legacy SPI opcode there as well.
 	 */
-	spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP_8_8_8_DTR],
+	spi_nor_set_pp_settings(&params->page_programs[SNOR_CMD_PP_8_8_8_DTR],
 				SPINOR_OP_PP_4B, SNOR_PROTO_8_8_8_DTR);
 
 	/*
 	 * The xSPI Profile 1.0 table advertises the number of additional
 	 * address bytes needed for Read Status Register command as 0 but the
 	 * actual value for that is 4.
 	 */
-	nor->params->rdsr_addr_nbytes = 4;
+	params->rdsr_addr_nbytes = 4;
+
+	/* The 2 Gb parts duplicate info and advertise 4 dice instead of 2. */
+	if (params->size == SZ_256M)
+		params->n_dice = 2;
 
 	return cypress_nor_get_page_size(nor);
 }
@@ -916,6 +921,11 @@ static const struct flash_info spansion_nor_parts[] = {
 		MFR_FLAGS(USE_CLPEF)
 		.fixups = &s28hx_t_fixups,
 	},
+	{ "s28hs02gt",   INFO(0x345b1c,      0, 0, 0)
+		PARSE_SFDP
+		MFR_FLAGS(USE_CLPEF)
+		.fixups = &s28hx_t_fixups,
+	},
 };
 
 /**