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>,
<pratyush@kernel.org>, <mwalle@kernel.org>,
<takahiro.kuwano@infineon.com>, <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>, <a-dutta@ti.com>
Subject: Re: [PATCH v3 01/13] spi: dt-bindings: allow spi-max-frequency to specify a frequency pair
Date: Thu, 28 May 2026 10:32:10 +0200 [thread overview]
Message-ID: <87wlwogcj9.fsf@bootlin.com> (raw)
In-Reply-To: <20260527175527.2247679-2-s-k6@ti.com> (Santhosh Kumar K.'s message of "Wed, 27 May 2026 23:25:15 +0530")
On 27/05/2026 at 23:25:15 +0530, Santhosh Kumar K <s-k6@ti.com> wrote:
> Some SPI controllers support high-speed operating modes that require
> controller-side configuration before the device can be driven at its
> rated maximum frequency. In these cases two frequencies are relevant:
> a conservative speed usable without any such configuration, and the
> maximum speed achievable once the controller is set up accordingly.
>
> The existing spi-max-frequency property accepts only a single u32,
> which cannot express this distinction. Extend it to accept either a
> single value (retaining full backward compatibility) or a two-element
> array [base-frequency, max-frequency], where base-frequency is the
> conservative operating speed and max-frequency is the highest speed
> the device supports after controller-side configuration.
>
> Signed-off-by: Santhosh Kumar K <s-k6@ti.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
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next prev parent reply other threads:[~2026-05-28 8:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-27 17:55 [PATCH v3 00/13] spi: cadence-quadspi: add PHY tuning support Santhosh Kumar K
2026-05-27 17:55 ` [PATCH v3 01/13] spi: dt-bindings: allow spi-max-frequency to specify a frequency pair Santhosh Kumar K
2026-05-28 8:32 ` Miquel Raynal [this message]
2026-05-27 17:55 ` [PATCH v3 02/13] spi: dt-bindings: cdns,qspi-nor: add PHY tuning pattern partition property Santhosh Kumar K
2026-05-28 8:34 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 03/13] spi: parse two-element spi-max-frequency property Santhosh Kumar K
2026-05-28 8:37 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 04/13] spi: spi-mem: add spi_mem_apply_base_freq_cap() Santhosh Kumar K
2026-05-28 8:43 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 05/13] spi: spi-mem: add execute_tuning callback and spi_mem_execute_tuning() Santhosh Kumar K
2026-05-28 8:44 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 06/13] spi: cadence-quadspi: move cqspi_readdata_capture earlier Santhosh Kumar K
2026-05-27 17:55 ` [PATCH v3 07/13] spi: cadence-quadspi: add DQS support to read data capture Santhosh Kumar K
2026-05-27 17:55 ` [PATCH v3 08/13] spi: cadence-quadspi: add PHY tuning support Santhosh Kumar K
2026-05-28 8:54 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 09/13] spi: cadence-quadspi: reject 2-byte-address DDR ops on PHY-tunable hardware Santhosh Kumar K
2026-05-28 9:01 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 10/13] spi: cadence-quadspi: enable PHY for direct reads and indirect writes Santhosh Kumar K
2026-05-28 9:09 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 11/13] mtd: spinand: run PHY tuning after init and update dirmap frequencies Santhosh Kumar K
2026-05-28 9:27 ` Miquel Raynal
2026-05-27 17:55 ` [PATCH v3 12/13] mtd: spi-nor: extract read op template construction into helper Santhosh Kumar K
2026-05-27 17:55 ` [PATCH v3 13/13] mtd: spi-nor: run PHY tuning after init and update dirmap frequency Santhosh Kumar K
2026-05-28 8:30 ` [PATCH v3 00/13] spi: cadence-quadspi: add PHY tuning support Miquel Raynal
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