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Subject: media: allegro: lookup VCU settings Author: Michael Tretter <[email protected]> Date: Wed Sep 8 14:03:12 2021 +0100 The VCU provides information about its configuration in a dedicated register space. These settings include, for example, the expected clock rates and the configuration of the encoder buffer. In the device tree, the settings are described by the "xlnx,vcu-settings" compatible. The settings are needed to correctly configure the clocks and the encoder buffer. Lookup the VCU settings in the device tree and make it accessible to the driver via a regmap. Signed-off-by: Michael Tretter <[email protected]> Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/platform/allegro-dvt/allegro-core.c | 7 +++++++ 1 file changed, 7 insertions(+) --- diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c b/drivers/media/platform/allegro-dvt/allegro-core.c index 89d6de6082f6..2663d9da0522 100644 --- a/drivers/media/platform/allegro-dvt/allegro-core.c +++ b/drivers/media/platform/allegro-dvt/allegro-core.c @@ -12,6 +12,8 @@ #include <linux/io.h> #include <linux/kernel.h> #include <linux/log2.h> +#include <linux/mfd/syscon.h> +#include <linux/mfd/syscon/xlnx-vcu.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> @@ -136,6 +138,7 @@ struct allegro_dev { struct regmap *regmap; struct regmap *sram; + struct regmap *settings; const struct fw_info *fw_info; struct allegro_buffer firmware; @@ -3721,6 +3724,10 @@ static int allegro_probe(struct platform_device *pdev) return PTR_ERR(dev->sram); } + dev->settings = syscon_regmap_lookup_by_compatible("xlnx,vcu-settings"); + if (IS_ERR(dev->settings)) + dev_warn(&pdev->dev, "failed to open settings\n"); + irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
