git.openwrt.org Git - openwrt/staging/linusw.git/blob

   1 From 7ae2506ae058842c14b664e0411a795e4589f6f8 Mon Sep 17 00:00:00 2001
   2 From: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>
   3 Date: Wed, 6 Dec 2023 14:38:03 +0000
   4 Subject: [PATCH 0798/1085] overlays: Add "always-on" parameter to imx477 and
   5  imx296
   6
   7 Leave the camera's power supplies up, to prevent the camera
   8 clamping its 1.8V digital I/Os to ground. This may be useful
   9 when synchronizing multiple camera systems using XVS or XTRIG.
  10
  11 Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com>
  12 ---
  13  arch/arm/boot/dts/overlays/README                  | 6 ++++++
  14  arch/arm/boot/dts/overlays/imx296-overlay.dts      | 9 +++++++++
  15  arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi | 9 +++++++++
  16  3 files changed, 24 insertions(+)
  17
  18 --- a/arch/arm/boot/dts/overlays/README
  19 +++ b/arch/arm/boot/dts/overlays/README
  20 @@ -2520,6 +2520,8 @@ Params: rotation                Mounting
  21          clock-frequency         Sets the clock frequency to match that used on
  22                                  the board, which should be one of 54000000
  23                                  (the default), 37125000 or 74250000.
  24 +        always-on               Leave the regulator powered up, to stop the
  25 +                                camera clamping I/Os such as XTRIG to 0V.
  26
  27
  28  Name:   imx327
  29 @@ -2558,6 +2560,8 @@ Params: rotation                Mounting
  30                                  configuring the sensor (default on)
  31          cam0                    Adopt the default configuration for CAM0 on a
  32                                  Compute Module (CSI0, i2c_vc, and cam0_reg).
  33 +        always-on               Leave the regulator powered up, to stop the
  34 +                                camera clamping I/Os such as XVS to 0V.
  35
  36
  37  Name:   imx462
  38 @@ -2596,6 +2600,8 @@ Params: rotation                Mounting
  39                                  configuring the sensor (default on)
  40          cam0                    Adopt the default configuration for CAM0 on a
  41                                  Compute Module (CSI0, i2c_vc, and cam0_reg).
  42 +        always-on               Leave the regulator powered up, to stop the
  43 +                                camera clamping I/Os such as XVS to 0V.
  44
  45
  46  Name:   imx519
  47 --- a/arch/arm/boot/dts/overlays/imx296-overlay.dts
  48 +++ b/arch/arm/boot/dts/overlays/imx296-overlay.dts
  49 @@ -37,6 +37,13 @@
  50                 };
  51         };
  52
  53 +       reg_alwayson_frag: fragment@99 {
  54 +               target = <&cam1_reg>;
  55 +               __dormant__ {
  56 +                       regulator-always-on;
  57 +               };
  58 +       };
  59 +
  60         i2c_frag: fragment@100 {
  61                 target = <&i2c_csi_dsi>;
  62                 __overlay__ {
  63 @@ -98,8 +105,10 @@
  64                        <&csi_frag>, "target:0=",<&csi0>,
  65                        <&clk_frag>, "target:0=",<&cam0_clk>,
  66                        <&reg_frag>, "target:0=",<&cam0_reg>,
  67 +                      <&reg_alwayson_frag>, "target:0=",<&cam0_reg>,
  68                        <&imx296>, "clocks:0=",<&cam0_clk>,
  69                        <&imx296>, "avdd-supply:0=",<&cam0_reg>;
  70                 clock-frequency = <&clk_over>, "clock-frequency:0";
  71 +               always-on = <0>, "+99";
  72         };
  73  };
  74 --- a/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
  75 +++ b/arch/arm/boot/dts/overlays/imx477_378-overlay.dtsi
  76 @@ -33,6 +33,13 @@
  77                 };
  78         };
  79
  80 +       reg_alwayson_frag: fragment@99 {
  81 +               target = <&cam1_reg>;
  82 +               __dormant__ {
  83 +                       regulator-always-on;
  84 +               };
  85 +       };
  86 +
  87         i2c_frag: fragment@100 {
  88                 target = <&i2c_csi_dsi>;
  89                 __overlay__ {
  90 @@ -69,8 +76,10 @@
  91                        <&csi_frag>, "target:0=",<&csi0>,
  92                        <&clk_frag>, "target:0=",<&cam0_clk>,
  93                        <&reg_frag>, "target:0=",<&cam0_reg>,
  94 +                      <&reg_alwayson_frag>, "target:0=",<&cam0_reg>,
  95                        <&cam_node>, "clocks:0=",<&cam0_clk>,
  96                        <&cam_node>, "VANA-supply:0=",<&cam0_reg>;
  97 +               always-on = <0>, "+99";
  98         };
  99  };
 100