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From: Haibo Chen <haibo.chen@nxp.com>
To: Han Xu <han.xu@nxp.com>, Yogesh Gaur <yogeshgaur.83@gmail.com>,
	 Mark Brown <broonie@kernel.org>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	 Frank Li <Frank.Li@nxp.com>
Cc: linux-spi@vger.kernel.org, imx@lists.linux.dev,
	 linux-kernel@vger.kernel.org, Haibo Chen <haibo.chen@nxp.com>
Subject: [PATCH 0/3] spi: spi-nxp-fspi: few fix for flexspi
Date: Mon, 22 Sep 2025 16:47:12 +0800	[thread overview]
Message-ID: <20250922-fspi-fix-v1-0-ff4315359d31@nxp.com> (raw)

PATCH 1: different operations maybe require different max frequency, so
         add flexspi to handle such case, re-config the clock rate when
	 new coming operation require new clock frequency.
Patch 2: add workaround for erratum ERR050272. Since only add 4us dealy
	 in nxp_fspi_dll_calibration(), so do not distinguish different
	 platforms.
Patch 3: add max frequency limitation for different sample clock source
         selection. Datasheet give max 66MHz for mode 0 and 166MHz for 
	 mode 3. And IC suggest to add this limitation on all SoCs for
	 safety and stability.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
---
Haibo Chen (2):
      spi: spi-nxp-fspi: re-config the clock rate when operation require new clock rate
      spi: spi-nxp-fspi: limit the clock rate for different sample clock source selection

Han Xu (1):
      spi: spi-nxp-fspi: add extra delay after dll locked

 drivers/spi/spi-nxp-fspi.c | 32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)
---
base-commit: 12c28f647e5eefd08796c7b161acc9c46bd7057a
change-id: 20250922-fspi-fix-14d4e071df7d

Best regards,
-- 
Haibo Chen <haibo.chen@nxp.com>


             reply	other threads:[~2025-09-22  8:47 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-22  8:47 Haibo Chen [this message]
2025-09-22  8:47 ` [PATCH 1/3] spi: spi-nxp-fspi: re-config the clock rate when operation require new clock rate Haibo Chen
2025-09-22  8:47 ` [PATCH 2/3] spi: spi-nxp-fspi: add extra delay after dll locked Haibo Chen
2025-09-22  8:47 ` [PATCH 3/3] spi: spi-nxp-fspi: limit the clock rate for different sample clock source selection Haibo Chen
2025-10-15 19:30 ` [PATCH 0/3] spi: spi-nxp-fspi: few fix for flexspi Mark Brown

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