linux-kernel - [PATCH v4 21/40] fsi: aspeed: Disable relative addressing and IPOLL for cfam reset

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Message-Id: <20240605212312.349188-22-eajames@linux.ibm.com>
Date: Wed,  5 Jun 2024 16:22:53 -0500
From: Eddie James <eajames@...ux.ibm.com>
To: linux-fsi@...ts.ozlabs.org
Cc: eajames@...ux.ibm.com, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org, linux-spi@...r.kernel.org,
        broonie@...nel.org, andi.shyti@...nel.org, joel@....id.au,
        alistair@...ple.id.au, jk@...abs.org, andrew@...econstruct.com.au,
        linux-aspeed@...ts.ozlabs.org, ninad@...ux.ibm.com,
        lakshmiy@...ibm.com
Subject: [PATCH v4 21/40] fsi: aspeed: Disable relative addressing and IPOLL for cfam reset

Need to disable these for the master reset after cfam reset.

Signed-off-by: Eddie James <eajames@...ux.ibm.com>
---
 drivers/fsi/fsi-master-aspeed.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
index 176e596b4391b..c9f6d84e1a372 100644
--- a/drivers/fsi/fsi-master-aspeed.c
+++ b/drivers/fsi/fsi-master-aspeed.c
@@ -402,11 +402,18 @@ static ssize_t cfam_reset_store(struct device *dev, struct device_attribute *att
 
 	trace_fsi_master_aspeed_cfam_reset(true);
 	spin_lock_irqsave(&aspeed->lock, flags);
+
+	regmap_write(aspeed->master.map, FSI_MMODE,
+		     aspeed->master.mmode & ~(FSI_MMODE_EIP | FSI_MMODE_RELA));
+
 	gpiod_set_value(aspeed->cfam_reset_gpio, 1);
 	udelay(900);
 	gpiod_set_value(aspeed->cfam_reset_gpio, 0);
 	udelay(900);
+
 	regmap_write(aspeed->master.map, FSI_MRESP0, FSI_MRESP_RST_ALL_MASTER);
+	regmap_write(aspeed->master.map, FSI_MMODE, aspeed->master.mmode);
+
 	spin_unlock_irqrestore(&aspeed->lock, flags);
 	trace_fsi_master_aspeed_cfam_reset(false);
 
-- 
2.39.3