spiFlashdb.hpp: disables quad mode configuration for all N25Q. It's useless because the chip is able by default to support single and quad transaction and after this configuration the flash is unable to works in single mode.

Author: trabucayre

src/spiFlashdb.hpp

@@ -190,8 +190,12 @@ static std::map <uint32_t, flash_t> flash_list = {
 		.tb_register = STATR,
 		.bp_len = 3,
 		.bp_offset = {(1 << 2), (1 << 3), (1 << 4), 0},
-		.quad_register = NVCONFR,
-		.quad_mask = (1 << 3),
+		// Disabled because the chip is unable to work in single after being confgured in quad
+		// this option isn't required and the chip is always able to uses quad mode instructions
+		.quad_register = NONER,
+		.quad_mask = 0,
+		//.quad_register = NVCONFR,
+		//.quad_mask = (1 << 3),
 	}},
 	{0x20ba17, {
 		.manufacturer = "micron",
@@ -205,8 +209,12 @@ static std::map <uint32_t, flash_t> flash_list = {
 		.tb_register = STATR,
 		.bp_len = 4,
 		.bp_offset = {(1 << 2), (1 << 3), (1 << 4), (1 << 6)},
-		.quad_register = NVCONFR,
-		.quad_mask = (1 << 3),
+		// Disabled because the chip is unable to work in single after being confgured in quad
+		// this option isn't required and the chip is always able to uses quad mode instructions
+		.quad_register = NONER,
+		.quad_mask = 0,
+		//.quad_register = NVCONFR,
+		//.quad_mask = (1 << 3),
 	}},
 	{0x20ba18, {
 		/* https://media-www.micron.com/-/media/client/global/documents/products/data-sheet/nor-flash/serial-nor/n25q/n25q_128mb_3v_65nm.pdf */
@@ -221,8 +229,12 @@ static std::map <uint32_t, flash_t> flash_list = {
 		.tb_register = STATR,
 		.bp_len = 4,
 		.bp_offset = {(1 << 2), (1 << 3), (1 << 4), (1 << 6)},
-		.quad_register = NVCONFR,
-		.quad_mask = (1 << 3),
+		// Disabled because the chip is unable to work in single after being confgured in quad
+		// this option isn't required and the chip is always able to uses quad mode instructions
+		.quad_register = NONER,
+		.quad_mask = 0,
+		//.quad_register = NVCONFR,
+		//.quad_mask = (1 << 3),
 	}},
 	{0x20ba19, {
 		/* https://datasheet.octopart.com/N25Q256A13E1241F-Micron-datasheet-11552757.pdf */
@@ -237,8 +249,12 @@ static std::map <uint32_t, flash_t> flash_list = {
 		.tb_register = STATR,
 		.bp_len = 4,
 		.bp_offset = {(1 << 2), (1 << 3), (1 << 4), (1 << 6)},
-		.quad_register = NVCONFR,
-		.quad_mask = (1 << 3),
+		// Disabled because the chip is unable to work in single after being confgured in quad
+		// this option isn't required and the chip is always able to uses quad mode instructions
+		.quad_register = NONER,
+		.quad_mask = 0,
+		//.quad_register = NVCONFR,
+		//.quad_mask = (1 << 3),
 	}},
 	{0x20bb18, {
 		/* https://www.micron.com/-/media/client/global/documents/products/data-sheet/nor-flash/serial-nor/n25q/n25q_128mb_1_8v_65nm.pdf */