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Tue, 27 Aug 2024 09:20:24 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-staging@lists.linux.dev Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= , Conor Dooley Subject: [PATCH v2 1/2] dt-bindings: i2c: maxim,max96712: Add compatible for MAX96724 Date: Tue, 27 Aug 2024 15:18:40 +0200 Message-ID: <20240827131841.629920-2-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240827131841.629920-1-niklas.soderlund+renesas@ragnatech.se> References: <20240827131841.629920-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The MAX96712 and MAX96724 are almost identical and can be supported by the same driver, add a compatible for MAX96724. Signed-off-by: Niklas Söderlund Acked-by: Conor Dooley --- * Changes since v1 - Group in series together with driver change. --- .../devicetree/bindings/media/i2c/maxim,max96712.yaml | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml index 6c72e77b927c..26f85151afbd 100644 --- a/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml @@ -25,7 +25,10 @@ description: | properties: compatible: - const: maxim,max96712 + items: + - enum: + - maxim,max96712 + - maxim,max96724 reg: description: I2C device address From patchwork Tue Aug 27 13:18:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 13779549 X-Patchwork-Delegate: kieran@bingham.xyz Received: from fout5-smtp.messagingengine.com (fout5-smtp.messagingengine.com [103.168.172.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E52E81BF7EF; 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Tue, 27 Aug 2024 09:20:26 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-staging@lists.linux.dev Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v2 2/2] media: staging: max96712: Add support for MAX96724 Date: Tue, 27 Aug 2024 15:18:41 +0200 Message-ID: <20240827131841.629920-3-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240827131841.629920-1-niklas.soderlund+renesas@ragnatech.se> References: <20240827131841.629920-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The MAX96724 is almost identical to the MAX96712 and can be supported by the same driver, add support for it. For the staging driver which only supports patter generation the big difference is that the datasheet (rev 4) for MAX96724 do not describe the DEBUG_EXTRA register, which is at offset 0x0009 on MAX96712. It's not clear if this register is removed or moved to a different offset. What is known is writing to register 0x0009 have no effect on MAX96724. This makes it impossible to increase the test pattern clock frequency from 25 MHz to 75Mhz on MAX96724. To be able to get a stable test pattern the DPLL frequency have to be increase instead to compensate for this. The frequency selected is found by experimentation as the MAX96724 datasheet is much sparser then what's available for MAX96712. Signed-off-by: Niklas Söderlund --- * Changes since v1 - Group in series together with binding. --- drivers/staging/media/max96712/max96712.c | 26 ++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/drivers/staging/media/max96712/max96712.c b/drivers/staging/media/max96712/max96712.c index 6bdbccbee05a..6bd02276c413 100644 --- a/drivers/staging/media/max96712/max96712.c +++ b/drivers/staging/media/max96712/max96712.c @@ -17,8 +17,10 @@ #include #define MAX96712_ID 0x20 +#define MAX96724_ID 0xA7 #define MAX96712_DPLL_FREQ 1000 +#define MAX96724_DPLL_FREQ 1200 enum max96712_pattern { MAX96712_PATTERN_CHECKERBOARD = 0, @@ -31,6 +33,7 @@ struct max96712_priv { struct gpio_desc *gpiod_pwdn; bool cphy; + bool max96724; struct v4l2_mbus_config_mipi_csi2 mipi; struct v4l2_subdev sd; @@ -120,6 +123,7 @@ static void max96712_mipi_enable(struct max96712_priv *priv, bool enable) static void max96712_mipi_configure(struct max96712_priv *priv) { + unsigned int dpll_freq; unsigned int i; u8 phy5 = 0; @@ -152,10 +156,11 @@ static void max96712_mipi_configure(struct max96712_priv *priv) max96712_write(priv, 0x8a5, phy5); /* Set link frequency for PHY0 and PHY1. */ + dpll_freq = priv->max96724 ? MAX96724_DPLL_FREQ : MAX96712_DPLL_FREQ; max96712_update_bits(priv, 0x415, 0x3f, - ((MAX96712_DPLL_FREQ / 100) & 0x1f) | BIT(5)); + ((dpll_freq / 100) & 0x1f) | BIT(5)); max96712_update_bits(priv, 0x418, 0x3f, - ((MAX96712_DPLL_FREQ / 100) & 0x1f) | BIT(5)); + ((dpll_freq / 100) & 0x1f) | BIT(5)); /* Enable PHY0 and PHY1 */ max96712_update_bits(priv, 0x8a2, 0xf0, 0x30); @@ -181,7 +186,8 @@ static void max96712_pattern_enable(struct max96712_priv *priv, bool enable) } /* PCLK 75MHz. */ - max96712_write(priv, 0x0009, 0x01); + if (!priv->max96724) + max96712_write(priv, 0x0009, 0x01); /* Configure Video Timing Generator for 1920x1080 @ 30 fps. */ max96712_write_bulk_value(priv, 0x1052, 0, 3); @@ -303,6 +309,7 @@ static const struct v4l2_ctrl_ops max96712_ctrl_ops = { static int max96712_v4l2_register(struct max96712_priv *priv) { + unsigned int dpll_freq; long pixel_rate; int ret; @@ -317,7 +324,8 @@ static int max96712_v4l2_register(struct max96712_priv *priv) * TODO: Once V4L2_CID_LINK_FREQ is changed from a menu control to an * INT64 control it should be used here instead of V4L2_CID_PIXEL_RATE. */ - pixel_rate = MAX96712_DPLL_FREQ / priv->mipi.num_data_lanes * 1000000; + dpll_freq = priv->max96724 ? MAX96724_DPLL_FREQ : MAX96712_DPLL_FREQ; + pixel_rate = dpll_freq / priv->mipi.num_data_lanes * 1000000; v4l2_ctrl_new_std(&priv->ctrl_handler, NULL, V4L2_CID_PIXEL_RATE, pixel_rate, pixel_rate, 1, pixel_rate); @@ -438,8 +446,15 @@ static int max96712_probe(struct i2c_client *client) if (priv->gpiod_pwdn) usleep_range(4000, 5000); - if (max96712_read(priv, 0x4a) != MAX96712_ID) + switch (max96712_read(priv, 0x4a)) { + case MAX96712_ID: + break; + case MAX96724_ID: + priv->max96724 = true; + break; + default: return -ENODEV; + } max96712_reset(priv); @@ -463,6 +478,7 @@ static void max96712_remove(struct i2c_client *client) static const struct of_device_id max96712_of_table[] = { { .compatible = "maxim,max96712" }, + { .compatible = "maxim,max96724" }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, max96712_of_table);