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[v2,2/2] video: sunxi: dw-hdmi: Use DM for HVCC regulator

Message ID 20230408002639.26241-3-andre.przywara@arm.com
State Accepted
Commit f5ee1ea864c4b8cbc13c58d5961a2b4be14e0e61
Delegated to: Anatolij Gustschin
Headers show
Series video: sunxi: dw-hdmi: complement partial OF conversion | expand

Commit Message

Andre Przywara April 8, 2023, 12:26 a.m. UTC 
From: Samuel Holland <samuel@sholland.org>

The HDMI PHY depends on the HVCC supply being enabled. So far we have
relied on it being enabled by an earlier firmware stage (SPL or TF-A).
Attempt to enable the regulator here, so we can remove that dependency.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 drivers/video/sunxi/sunxi_dw_hdmi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

Comments

Jernej Škrabec April 8, 2023, 6:11 a.m. UTC | #1 
Dne sobota, 08. april 2023 ob 02:26:39 CEST je Andre Przywara napisal(a):
> From: Samuel Holland <samuel@sholland.org>
> 
> The HDMI PHY depends on the HVCC supply being enabled. So far we have
> relied on it being enabled by an earlier firmware stage (SPL or TF-A).
> Attempt to enable the regulator here, so we can remove that dependency.
> 
> Signed-off-by: Samuel Holland <samuel@sholland.org>
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej

> ---
>  drivers/video/sunxi/sunxi_dw_hdmi.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/video/sunxi/sunxi_dw_hdmi.c
> b/drivers/video/sunxi/sunxi_dw_hdmi.c index ef18d1f281f..0324a050d03 100644
> --- a/drivers/video/sunxi/sunxi_dw_hdmi.c
> +++ b/drivers/video/sunxi/sunxi_dw_hdmi.c
> @@ -19,11 +19,13 @@
>  #include <asm/arch/lcdc.h>
>  #include <linux/bitops.h>
>  #include <linux/delay.h>
> +#include <power/regulator.h>
> 
>  struct sunxi_dw_hdmi_priv {
>  	struct dw_hdmi hdmi;
>  	struct reset_ctl_bulk resets;
>  	struct clk_bulk clocks;
> +	struct udevice *hvcc;
>  };
> 
>  struct sunxi_hdmi_phy {
> @@ -333,6 +335,9 @@ static int sunxi_dw_hdmi_probe(struct udevice *dev)
>  		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
>  	int ret;
> 
> +	if (priv->hvcc)
> +		regulator_set_enable(priv->hvcc, true);
> +
>  	/* Set pll3 to 297 MHz */
>  	clock_set_pll3(297000000);
> 
> @@ -384,6 +389,10 @@ static int sunxi_dw_hdmi_of_to_plat(struct udevice
> *dev) if (ret)
>  		return ret;
> 
> +	ret = device_get_supply_regulator(dev, "hvcc-supply", &priv->hvcc);
> +	if (ret)
> +		priv->hvcc = NULL;
> +
>  	return 0;
>  }
diff mbox series

Patch

diff --git a/drivers/video/sunxi/sunxi_dw_hdmi.c b/drivers/video/sunxi/sunxi_dw_hdmi.c
index ef18d1f281f..0324a050d03 100644
--- a/drivers/video/sunxi/sunxi_dw_hdmi.c
+++ b/drivers/video/sunxi/sunxi_dw_hdmi.c
@@ -19,11 +19,13 @@ 
 #include <asm/arch/lcdc.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
+#include <power/regulator.h>
 
 struct sunxi_dw_hdmi_priv {
 	struct dw_hdmi hdmi;
 	struct reset_ctl_bulk resets;
 	struct clk_bulk clocks;
+	struct udevice *hvcc;
 };
 
 struct sunxi_hdmi_phy {
@@ -333,6 +335,9 @@  static int sunxi_dw_hdmi_probe(struct udevice *dev)
 		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
 	int ret;
 
+	if (priv->hvcc)
+		regulator_set_enable(priv->hvcc, true);
+
 	/* Set pll3 to 297 MHz */
 	clock_set_pll3(297000000);
 
@@ -384,6 +389,10 @@  static int sunxi_dw_hdmi_of_to_plat(struct udevice *dev)
 	if (ret)
 		return ret;
 
+	ret = device_get_supply_regulator(dev, "hvcc-supply", &priv->hvcc);
+	if (ret)
+		priv->hvcc = NULL;
+
 	return 0;
 }