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From: <patrice.chotard@foss.st.com>
To: Mark Brown <broonie@kernel.org>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <linux-spi@vger.kernel.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <christophe.kerello@foss.st.com>,
	<patrice.chotard@foss.st.com>, <eberhard.stoll@kontron.de>
Subject: [PATCH 1/3] spi: stm32-qspi: Fix wait_cmd timeout in APM mode
Date: Wed, 11 May 2022 09:46:42 +0200	[thread overview]
Message-ID: <20220511074644.558874-2-patrice.chotard@foss.st.com> (raw)
In-Reply-To: <20220511074644.558874-1-patrice.chotard@foss.st.com>

From: Patrice Chotard <patrice.chotard@foss.st.com>

In APM mode, TCF and TEF flags are not set. To avoid timeout in
stm32_qspi_wait_cmd(), don't check if TCF/TEF are set.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reported-by: eberhard.stoll@kontron.de
---
 drivers/spi/spi-stm32-qspi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index bf47a1452001..12d8bec35bf6 100644
--- a/drivers/spi/spi-stm32-qspi.c
+++ b/drivers/spi/spi-stm32-qspi.c
@@ -308,7 +308,8 @@ static int stm32_qspi_wait_cmd(struct stm32_qspi *qspi,
 	if (!op->data.nbytes)
 		goto wait_nobusy;
 
-	if (readl_relaxed(qspi->io_base + QSPI_SR) & SR_TCF)
+	if ((readl_relaxed(qspi->io_base + QSPI_SR) & SR_TCF) ||
+	    qspi->fmode == CCR_FMODE_APM)
 		goto out;
 
 	reinit_completion(&qspi->data_completion);
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: <patrice.chotard@foss.st.com>
To: Mark Brown <broonie@kernel.org>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: <linux-spi@vger.kernel.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <christophe.kerello@foss.st.com>,
	<patrice.chotard@foss.st.com>, <eberhard.stoll@kontron.de>
Subject: [PATCH 1/3] spi: stm32-qspi: Fix wait_cmd timeout in APM mode
Date: Wed, 11 May 2022 09:46:42 +0200	[thread overview]
Message-ID: <20220511074644.558874-2-patrice.chotard@foss.st.com> (raw)
In-Reply-To: <20220511074644.558874-1-patrice.chotard@foss.st.com>

From: Patrice Chotard <patrice.chotard@foss.st.com>

In APM mode, TCF and TEF flags are not set. To avoid timeout in
stm32_qspi_wait_cmd(), don't check if TCF/TEF are set.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reported-by: eberhard.stoll@kontron.de
---
 drivers/spi/spi-stm32-qspi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
index bf47a1452001..12d8bec35bf6 100644
--- a/drivers/spi/spi-stm32-qspi.c
+++ b/drivers/spi/spi-stm32-qspi.c
@@ -308,7 +308,8 @@ static int stm32_qspi_wait_cmd(struct stm32_qspi *qspi,
 	if (!op->data.nbytes)
 		goto wait_nobusy;
 
-	if (readl_relaxed(qspi->io_base + QSPI_SR) & SR_TCF)
+	if ((readl_relaxed(qspi->io_base + QSPI_SR) & SR_TCF) ||
+	    qspi->fmode == CCR_FMODE_APM)
 		goto out;
 
 	reinit_completion(&qspi->data_completion);
-- 
2.25.1


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  reply	other threads:[~2022-05-11  7:47 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-11  7:46 [PATCH 0/3] spi: stm32-qspi: flags management fixes patrice.chotard
2022-05-11  7:46 ` patrice.chotard
2022-05-11  7:46 ` patrice.chotard [this message]
2022-05-11  7:46   ` [PATCH 1/3] spi: stm32-qspi: Fix wait_cmd timeout in APM mode patrice.chotard
2022-05-11  7:46 ` [PATCH 2/3] spi: stm32-qspi: Always check SR_TCF flags in stm32_qspi_wait_cmd() patrice.chotard
2022-05-11  7:46   ` patrice.chotard
2022-05-11  7:46 ` [PATCH 3/3] spi: stm32-qspi: Remove SR_BUSY bit check before sending command patrice.chotard
2022-05-11  7:46   ` patrice.chotard
2022-05-11 18:49 ` [PATCH 0/3] spi: stm32-qspi: flags management fixes Mark Brown
2022-05-11 18:49   ` Mark Brown

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