From: Tudor Ambarus <tudor.ambarus@linaro.org> To: broonie@kernel.org, robh@kernel.org, andi.shyti@kernel.org, semen.protsenko@linaro.org Cc: krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com, linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, peter.griffin@linaro.org, kernel-team@android.com, willmcvicker@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, arnd@arndb.de, Tudor Ambarus <tudor.ambarus@linaro.org> Subject: [PATCH 05/12] spi: s3c64xx: retrieve the FIFO depth from the device tree Date: Thu, 8 Feb 2024 13:50:38 +0000 [thread overview] Message-ID: <20240208135045.3728927-6-tudor.ambarus@linaro.org> (raw) In-Reply-To: <20240208135045.3728927-1-tudor.ambarus@linaro.org> There are SoCs that configure different FIFO depths for their instances of the SPI IP. See the fifo_lvl_mask defined for exynos4_spi_port_config for example: .fifo_lvl_mask = { 0x1ff, 0x7F, 0x7F }, The first instance of the IP is configured with 256 bytes FIFOs, whereas the last two are configured with 64 bytes FIFOs. Instead of mangling with the .fifo_lvl_mask and its dependency of the DT alias ID, allow such SoCs to determine the FIFO depth via the ``fifo-depth`` DT property. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> --- drivers/spi/spi-s3c64xx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 72572e23cde5..b1c63f75021d 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1263,7 +1263,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) sdd->port_id = pdev->id; } - sdd->fifo_depth = FIFO_DEPTH(sdd); + if (of_property_read_u32(pdev->dev.of_node, "fifo-depth", + &sdd->fifo_depth)) + sdd->fifo_depth = FIFO_DEPTH(sdd); s3c64xx_spi_set_fifomask(sdd); -- 2.43.0.687.g38aa6559b0-goog
WARNING: multiple messages have this Message-ID (diff)
From: Tudor Ambarus <tudor.ambarus@linaro.org> To: broonie@kernel.org, robh@kernel.org, andi.shyti@kernel.org, semen.protsenko@linaro.org Cc: krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com, linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, peter.griffin@linaro.org, kernel-team@android.com, willmcvicker@google.com, conor+dt@kernel.org, devicetree@vger.kernel.org, arnd@arndb.de, Tudor Ambarus <tudor.ambarus@linaro.org> Subject: [PATCH 05/12] spi: s3c64xx: retrieve the FIFO depth from the device tree Date: Thu, 8 Feb 2024 13:50:38 +0000 [thread overview] Message-ID: <20240208135045.3728927-6-tudor.ambarus@linaro.org> (raw) In-Reply-To: <20240208135045.3728927-1-tudor.ambarus@linaro.org> There are SoCs that configure different FIFO depths for their instances of the SPI IP. See the fifo_lvl_mask defined for exynos4_spi_port_config for example: .fifo_lvl_mask = { 0x1ff, 0x7F, 0x7F }, The first instance of the IP is configured with 256 bytes FIFOs, whereas the last two are configured with 64 bytes FIFOs. Instead of mangling with the .fifo_lvl_mask and its dependency of the DT alias ID, allow such SoCs to determine the FIFO depth via the ``fifo-depth`` DT property. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> --- drivers/spi/spi-s3c64xx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 72572e23cde5..b1c63f75021d 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1263,7 +1263,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) sdd->port_id = pdev->id; } - sdd->fifo_depth = FIFO_DEPTH(sdd); + if (of_property_read_u32(pdev->dev.of_node, "fifo-depth", + &sdd->fifo_depth)) + sdd->fifo_depth = FIFO_DEPTH(sdd); s3c64xx_spi_set_fifomask(sdd); -- 2.43.0.687.g38aa6559b0-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-02-08 13:50 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-08 13:50 [PATCH 00/12] spi: s3c64xx: remove OF alias ID dependency Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 01/12] spi: dt-bindings: introduce the ``fifo-depth`` property Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 18:24 ` Conor Dooley 2024-02-08 18:24 ` Conor Dooley 2024-02-09 13:56 ` Tudor Ambarus 2024-02-09 13:56 ` Tudor Ambarus 2024-02-09 16:21 ` Conor Dooley 2024-02-09 16:21 ` Conor Dooley 2024-02-09 16:55 ` Tudor Ambarus 2024-02-09 16:55 ` Tudor Ambarus 2024-02-12 10:38 ` Geert Uytterhoeven 2024-02-12 10:38 ` Geert Uytterhoeven 2024-02-12 12:01 ` Tudor Ambarus 2024-02-12 12:01 ` Tudor Ambarus 2024-02-09 17:41 ` Mark Brown 2024-02-09 17:41 ` Mark Brown 2024-02-09 17:13 ` Geert Uytterhoeven 2024-02-09 17:13 ` Geert Uytterhoeven 2024-02-11 13:49 ` Krzysztof Kozlowski 2024-02-11 13:49 ` Krzysztof Kozlowski 2024-02-12 6:17 ` Tudor Ambarus 2024-02-12 6:17 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 02/12] spi: s3c64xx: define a magic value Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 03/12] spi: s3c64xx: allow full FIFO masks Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 04/12] spi: s3c64xx: determine the fifo depth only once Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus [this message] 2024-02-08 13:50 ` [PATCH 05/12] spi: s3c64xx: retrieve the FIFO depth from the device tree Tudor Ambarus 2024-02-08 13:50 ` [PATCH 06/12] spi: s3c64xx: allow FIFO depth to be determined from the compatible Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 07/12] spi: s3c64xx: let the SPI core determine the bus number Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 08/12] spi: s3c64xx: introduce s3c64xx_spi_set_port_id() Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 09/12] spi: s3c64xx: get rid of the OF alias ID dependency Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 10/12] spi: s3c64xx: deprecate fifo_lvl_mask, rx_lvl_offset and port_id Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 11/12] spi: s3c64xx: switch gs101 to new port config data Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus 2024-02-08 16:01 ` Tudor Ambarus 2024-02-08 16:01 ` Tudor Ambarus 2024-02-08 13:50 ` [PATCH 12/12] spi: s3c64xx: switch exynos850 " Tudor Ambarus 2024-02-08 13:50 ` Tudor Ambarus
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