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From: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
To: <u-boot@lists.denx.de>
Cc: <jagan@amarulasolutions.com>, <michal.simek@amd.com>,
	<git@xilinx.com>, "T Karthik Reddy" <t.karthik.reddy@xilinx.com>,
	Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Subject: [PATCH 5/5] spi: cadence-qspi: Fix programming ospi flash speed
Date: Thu, 12 May 2022 04:05:35 -0600	[thread overview]
Message-ID: <20220512100535.16364-6-ashok.reddy.soma@xilinx.com> (raw)
In-Reply-To: <20220512100535.16364-1-ashok.reddy.soma@xilinx.com>

From: T Karthik Reddy <t.karthik.reddy@xilinx.com>

When the requested flash speed is 0, the baudrate division for the
requested speed causing drop in the performance. So set the ospi flash
to operate at max frequency when requested speed is zero.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
---

 drivers/spi/cadence_qspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 5fb4d2ff03..907f5dadc4 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -151,7 +151,7 @@ static int cadence_spi_set_speed(struct udevice *bus, uint hz)
 	struct cadence_spi_priv *priv = dev_get_priv(bus);
 	int err;
 
-	if (hz > plat->max_hz)
+	if (!hz || hz > plat->max_hz)
 		hz = plat->max_hz;
 
 	/* Disable QSPI */
-- 
2.17.1


  parent reply	other threads:[~2022-05-12 10:06 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-12 10:05 [PATCH 0/5] Add support for versal specific cadence ospi driver Ashok Reddy Soma
2022-05-12 10:05 ` [PATCH 1/5] spi: cadence-qspi: move cadence qspi macros to header file Ashok Reddy Soma
2022-05-12 10:05 ` [PATCH 2/5] arm64: versal: Add versal specific cadence ospi driver Ashok Reddy Soma
2022-05-12 10:05 ` [PATCH 3/5] spi: cadence-qspi: reset qspi flash for versal platform Ashok Reddy Soma
2022-05-12 10:05 ` [PATCH 4/5] spi: cadence_qspi: Enable apb linear mode for apb read & write operations Ashok Reddy Soma
2022-05-12 10:05 ` Ashok Reddy Soma [this message]
2022-05-24  7:23 ` [PATCH 0/5] Add support for versal specific cadence ospi driver Michal Simek
2022-07-04 13:42 ` Michal Simek

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