linux-kernel - [PATCH] pinctrl: ingenic: Add NAND FRE/FWE pins for JZ4740

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Date:   Sun,  7 Jun 2020 19:42:43 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        od@...c.me, Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH] pinctrl: ingenic: Add NAND FRE/FWE pins for JZ4740

Add the FRE/FWE pins for the JZ4740.

These pins must be in function #0 for the NAND to work. The reason it
worked before was because the bootloader did set these pins to the
correct function beforehand.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/pinctrl/pinctrl-ingenic.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c
index 6a8d44504f94..1da72438d680 100644
--- a/drivers/pinctrl/pinctrl-ingenic.c
+++ b/drivers/pinctrl/pinctrl-ingenic.c
@@ -124,6 +124,7 @@ static int jz4740_nand_cs1_pins[] = { 0x39, };
 static int jz4740_nand_cs2_pins[] = { 0x3a, };
 static int jz4740_nand_cs3_pins[] = { 0x3b, };
 static int jz4740_nand_cs4_pins[] = { 0x3c, };
+static int jz4740_nand_fre_fwe_pins[] = { 0x5c, 0x5d, };
 static int jz4740_pwm_pwm0_pins[] = { 0x77, };
 static int jz4740_pwm_pwm1_pins[] = { 0x78, };
 static int jz4740_pwm_pwm2_pins[] = { 0x79, };
@@ -146,6 +147,7 @@ static int jz4740_nand_cs1_funcs[] = { 0, };
 static int jz4740_nand_cs2_funcs[] = { 0, };
 static int jz4740_nand_cs3_funcs[] = { 0, };
 static int jz4740_nand_cs4_funcs[] = { 0, };
+static int jz4740_nand_fre_fwe_funcs[] = { 0, 0, };
 static int jz4740_pwm_pwm0_funcs[] = { 0, };
 static int jz4740_pwm_pwm1_funcs[] = { 0, };
 static int jz4740_pwm_pwm2_funcs[] = { 0, };
@@ -178,6 +180,7 @@ static const struct group_desc jz4740_groups[] = {
 	INGENIC_PIN_GROUP("nand-cs2", jz4740_nand_cs2),
 	INGENIC_PIN_GROUP("nand-cs3", jz4740_nand_cs3),
 	INGENIC_PIN_GROUP("nand-cs4", jz4740_nand_cs4),
+	INGENIC_PIN_GROUP("nand-fre-fwe", jz4740_nand_fre_fwe),
 	INGENIC_PIN_GROUP("pwm0", jz4740_pwm_pwm0),
 	INGENIC_PIN_GROUP("pwm1", jz4740_pwm_pwm1),
 	INGENIC_PIN_GROUP("pwm2", jz4740_pwm_pwm2),
@@ -195,7 +198,7 @@ static const char *jz4740_lcd_groups[] = {
 	"lcd-8bit", "lcd-16bit", "lcd-18bit", "lcd-18bit-tft", "lcd-no-pins",
 };
 static const char *jz4740_nand_groups[] = {
-	"nand-cs1", "nand-cs2", "nand-cs3", "nand-cs4",
+	"nand-cs1", "nand-cs2", "nand-cs3", "nand-cs4", "nand-fre-fwe",
 };
 static const char *jz4740_pwm0_groups[] = { "pwm0", };
 static const char *jz4740_pwm1_groups[] = { "pwm1", };
-- 
2.26.2