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101 lines
3.5 KiB
Diff
101 lines
3.5 KiB
Diff
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From 7ae2506ae058842c14b664e0411a795e4589f6f8 Mon Sep 17 00:00:00 2001
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From: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>
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Date: Wed, 6 Dec 2023 14:38:03 +0000
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Subject: [PATCH 0798/1085] overlays: Add "always-on" parameter to imx477 and
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imx296
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Leave the camera's power supplies up, to prevent the camera
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clamping its 1.8V digital I/Os to ground. This may be useful
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when synchronizing multiple camera systems using XVS or XTRIG.
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Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>
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---
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arch/arm/boot/dts/overlays/README | 6 ++++++
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arch/arm/boot/dts/overlays/imx296-overlay.dts | 9 +++++++++
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arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi | 9 +++++++++
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3 files changed, 24 insertions(+)
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -2520,6 +2520,8 @@ Params: rotation Mounting
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clock-frequency Sets the clock frequency to match that used on
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the board, which should be one of 54000000
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(the default), 37125000 or 74250000.
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+ always-on Leave the regulator powered up, to stop the
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+ camera clamping I/Os such as XTRIG to 0V.
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Name: imx327
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@@ -2558,6 +2560,8 @@ Params: rotation Mounting
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configuring the sensor (default on)
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cam0 Adopt the default configuration for CAM0 on a
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Compute Module (CSI0, i2c_vc, and cam0_reg).
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+ always-on Leave the regulator powered up, to stop the
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+ camera clamping I/Os such as XVS to 0V.
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Name: imx462
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@@ -2596,6 +2600,8 @@ Params: rotation Mounting
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configuring the sensor (default on)
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cam0 Adopt the default configuration for CAM0 on a
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Compute Module (CSI0, i2c_vc, and cam0_reg).
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+ always-on Leave the regulator powered up, to stop the
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+ camera clamping I/Os such as XVS to 0V.
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Name: imx519
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--- a/arch/arm/boot/dts/overlays/imx296-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/imx296-overlay.dts
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@@ -37,6 +37,13 @@
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};
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};
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+ reg_alwayson_frag: fragment@99 {
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+ target = <&cam1_reg>;
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+ __dormant__ {
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+ regulator-always-on;
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+ };
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+ };
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+
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i2c_frag: fragment@100 {
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target = <&i2c_csi_dsi>;
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__overlay__ {
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@@ -98,8 +105,10 @@
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<&csi_frag>, "target:0=",<&csi0>,
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<&clk_frag>, "target:0=",<&cam0_clk>,
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<®_frag>, "target:0=",<&cam0_reg>,
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+ <®_alwayson_frag>, "target:0=",<&cam0_reg>,
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<&imx296>, "clocks:0=",<&cam0_clk>,
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<&imx296>, "avdd-supply:0=",<&cam0_reg>;
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clock-frequency = <&clk_over>, "clock-frequency:0";
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+ always-on = <0>, "+99";
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};
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};
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--- a/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
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+++ b/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
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@@ -33,6 +33,13 @@
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};
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};
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+ reg_alwayson_frag: fragment@99 {
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+ target = <&cam1_reg>;
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+ __dormant__ {
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+ regulator-always-on;
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+ };
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+ };
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+
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i2c_frag: fragment@100 {
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target = <&i2c_csi_dsi>;
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__overlay__ {
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@@ -69,8 +76,10 @@
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<&csi_frag>, "target:0=",<&csi0>,
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<&clk_frag>, "target:0=",<&cam0_clk>,
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<®_frag>, "target:0=",<&cam0_reg>,
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+ <®_alwayson_frag>, "target:0=",<&cam0_reg>,
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<&cam_node>, "clocks:0=",<&cam0_clk>,
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<&cam_node>, "VANA-supply:0=",<&cam0_reg>;
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+ always-on = <0>, "+99";
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};
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};
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