[PATCH 04/11] board: freescale: p1_p2_rdb_pc: Do not set MPC85xx_PMUXCR_SDHC_WP bit when SDHC_WP is used as GPIO

From: "Pali Rohár" <pali@kernel.org>
To: Priyanka Jain <priyanka.jain@nxp.com>,
	Qiang Zhao <qiang.zhao@nxp.com>,
	Shengzhou Liu <Shengzhou.Liu@nxp.com>,
	Sinan Akman <sinan@writeme.com>
Cc: u-boot@lists.denx.de
Subject: [PATCH 04/11] board: freescale: p1_p2_rdb_pc: Do not set MPC85xx_PMUXCR_SDHC_WP bit when SDHC_WP is used as GPIO
Date: Thu,  7 Apr 2022 12:16:17 +0200	[thread overview]
Message-ID: <20220407101624.15850-5-pali@kernel.org> (raw)
In-Reply-To: <20220407101624.15850-1-pali@kernel.org>

When MPC85xx_PMUXCR_SDHC_WP is set then SDHC controller automatically makes
inserted SD card readonly if GPIO[9] is active.

In some design GPIO[9] pin does not have to be connected to SD card
write-protect pin and can be used as GPIO.

So do not set MPC85xx_PMUXCR_SDHC_WP bit when GPIO[9] is not used for
SDHC_WP functionality.

Signed-off-by: Pali Rohár <pali@kernel.org>
---
 board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c
index 766a82386079..fc581bdb2a40 100644
--- a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c
+++ b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c
@@ -147,8 +147,10 @@ int board_early_init_f(void)
 {
 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 
-	setbits_be32(&gur->pmuxcr,
-			(MPC85xx_PMUXCR_SDHC_CD | MPC85xx_PMUXCR_SDHC_WP));
+	setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_SDHC_CD);
+#ifndef SDHC_WP_IS_GPIO
+	setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_SDHC_WP);
+#endif
 	clrbits_be32(&gur->sdhcdcr, SDHCDCR_CD_INV);
 
 	clrbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_SD_DATA);
-- 
2.20.1

