From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Santhosh Kumar K <s-k6@ti.com>
Cc: <broonie@kernel.org>, <robh@kernel.org>, <krzk+dt@kernel.org>,
<conor+dt@kernel.org>, <richard@nod.at>, <vigneshr@ti.com>,
<tudor.ambarus@linaro.org>, <pratyush@kernel.org>,
<mwalle@kernel.org>, <linux-spi@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-mtd@lists.infradead.org>, <praneeth@ti.com>,
<u-kumar1@ti.com>, <p-mantena@ti.com>, <a-dutta@ti.com>
Subject: Re: [RFC PATCH v2 12/12] spi: cadence-quadspi: enable PHY for direct reads and writes
Date: Thu, 05 Feb 2026 18:51:55 +0100 [thread overview]
Message-ID: <87tsvvf58k.fsf@bootlin.com> (raw)
In-Reply-To: <20260113141617.1905039-13-s-k6@ti.com> (Santhosh Kumar K.'s message of "Tue, 13 Jan 2026 19:46:17 +0530")
On 13/01/2026 at 19:46:17 +0530, Santhosh Kumar K <s-k6@ti.com> wrote:
> Enable PHY mode for direct memory-mapped reads and large indirect writes
> (>= 1KB) to leverage calibrated RX/TX timing delays for high-frequency
> operations.
Is enabling the calibration so impacting? Did you measure it? Isn't
skipping any non read or non write operations enough? Status reads for
example should have a smaller op->max_freq based on my previous comment,
so in theory I do not see when we will meet these cases.
Fine for the other conditions.
Miquèl
next prev parent reply other threads:[~2026-02-05 17:52 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-13 14:16 [RFC PATCH v2 00/12] spi: cadence-quadspi: add PHY tuning support Santhosh Kumar K
2026-01-13 14:16 ` [RFC PATCH v2 01/12] spi: dt-bindings: add spi-has-dqs property Santhosh Kumar K
2026-02-04 10:46 ` Miquel Raynal
2026-02-05 17:46 ` Santhosh Kumar K
2026-02-05 18:06 ` Miquel Raynal
2026-01-13 14:16 ` [RFC PATCH v2 02/12] spi: spi-mem: add controller tuning support Santhosh Kumar K
2026-01-13 14:16 ` [RFC PATCH v2 03/12] mtd: spinand: perform controller tuning during probe Santhosh Kumar K
2026-02-05 17:35 ` Miquel Raynal
2026-02-06 19:23 ` Santhosh Kumar K
2026-01-13 14:16 ` [RFC PATCH v2 04/12] mtd: spi-nor: extract read operation setup into helper Santhosh Kumar K
2026-01-13 14:16 ` [RFC PATCH v2 05/12] mtd: spi-nor: perform controller tuning during probe Santhosh Kumar K
2026-01-13 14:16 ` [RFC PATCH v2 06/12] spi: cadence-quadspi: move cqspi_readdata_capture earlier Santhosh Kumar K
2026-02-05 17:35 ` Miquel Raynal
2026-01-13 14:16 ` [RFC PATCH v2 07/12] spi: cadence-quadspi: add DQS support to read data capture Santhosh Kumar K
2026-02-05 17:35 ` Miquel Raynal
2026-01-13 14:16 ` [RFC PATCH v2 08/12] spi: cadence-quadspi: read 'has-dqs' DT property Santhosh Kumar K
2026-02-05 17:35 ` Miquel Raynal
2026-02-19 12:14 ` Michael Walle
2026-02-20 8:21 ` Miquel Raynal
2026-01-13 14:16 ` [RFC PATCH v2 09/12] spi: cadence-quadspi: add PHY tuning infrastructure Santhosh Kumar K
2026-02-05 17:39 ` Miquel Raynal
2026-02-06 19:25 ` Santhosh Kumar K
2026-02-13 8:18 ` Miquel Raynal
2026-02-18 18:07 ` Santhosh Kumar K
2026-02-19 10:30 ` Miquel Raynal
2026-02-09 9:48 ` Michael Walle
2026-02-12 10:50 ` Miquel Raynal
2026-02-12 11:14 ` Michael Walle
2026-02-12 12:55 ` Miquel Raynal
2026-02-18 18:07 ` Santhosh Kumar K
2026-02-19 8:33 ` Michael Walle
2026-02-19 10:34 ` Miquel Raynal
2026-01-13 14:16 ` [RFC PATCH v2 10/12] spi: cadence-quadspi: implement PHY tuning algorithm Santhosh Kumar K
2026-02-05 17:42 ` Miquel Raynal
2026-01-13 14:16 ` [RFC PATCH v2 11/12] spi: cadence-quadspi: restrict PHY frequency to tuned operations Santhosh Kumar K
2026-02-05 17:47 ` Miquel Raynal
2026-02-06 19:27 ` Santhosh Kumar K
2026-02-13 8:21 ` Miquel Raynal
2026-03-17 15:17 ` Miquel Raynal
2026-01-13 14:16 ` [RFC PATCH v2 12/12] spi: cadence-quadspi: enable PHY for direct reads and writes Santhosh Kumar K
2026-02-05 17:51 ` Miquel Raynal [this message]
2026-02-04 10:29 ` [RFC PATCH v2 00/12] spi: cadence-quadspi: add PHY tuning support Miquel Raynal
2026-02-05 15:48 ` Miquel Raynal
2026-02-06 19:28 ` Santhosh Kumar K
2026-02-13 9:01 ` Miquel Raynal
2026-02-18 18:08 ` Santhosh Kumar K
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