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Thu, 28 Aug 2025 03:15:37 -0700 (PDT) From: James Clark Date: Thu, 28 Aug 2025 11:14:47 +0100 Subject: [PATCH v2 8/9] spi: spi-fsl-lpspi: Parameterize reading num-cs from hardware Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250828-james-nxp-lpspi-v2-8-6262b9aa9be4@linaro.org> References: <20250828-james-nxp-lpspi-v2-0-6262b9aa9be4@linaro.org> In-Reply-To: <20250828-james-nxp-lpspi-v2-0-6262b9aa9be4@linaro.org> To: Frank Li , Mark Brown , Clark Wang , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Fabio Estevam , Larisa Grigore , Larisa Grigore , Ghennadi Procopciuc , Ciprianmarian Costea , s32@nxp.com Cc: James Clark , linux-spi@vger.kernel.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org X-Mailer: b4 0.14.0 Add query_hw_for_num_cs in devtype to avoid directly checking compatible string "fsl,imx93-spi". No functionality change. Signed-off-by: James Clark Reviewed-by: Frank Li --- drivers/spi/spi-fsl-lpspi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index ea25e8dab0a4..ce347cdbb009 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -87,6 +87,7 @@ =20 struct fsl_lpspi_devtype_data { u8 prescale_max : 3; /* 0 =3D=3D no limit */ + bool query_hw_for_num_cs : 1; }; =20 struct lpspi_config { @@ -137,6 +138,7 @@ struct fsl_lpspi_data { */ static const struct fsl_lpspi_devtype_data imx93_lpspi_devtype_data =3D { .prescale_max =3D 1, + .query_hw_for_num_cs =3D true, }; =20 static const struct fsl_lpspi_devtype_data imx7ulp_lpspi_devtype_data =3D { @@ -932,7 +934,7 @@ static int fsl_lpspi_probe(struct platform_device *pdev) fsl_lpspi->rxfifosize =3D 1 << ((temp >> 8) & 0x0f); if (of_property_read_u32((&pdev->dev)->of_node, "num-cs", &num_cs)) { - if (of_device_is_compatible(pdev->dev.of_node, "fsl,imx93-spi")) + if (devtype_data->query_hw_for_num_cs) num_cs =3D ((temp >> 16) & 0xf); else num_cs =3D 1; --=20 2.34.1