target/linux/sunxi/patches-6.1/461-dt-bindings-phy-Add-special-clock-for-Allwinner-H616.patch

   1 From e2078ae0c559b6ac91db19262b56d8cf334354cb Mon Sep 17 00:00:00 2001
   2 From: Andre Przywara <andre.przywara@arm.com>
   3 Date: Mon, 12 Sep 2022 00:03:22 +0100
   4 Subject: [PATCH 5001/5006] dt-bindings: phy: Add special clock for Allwinner
   5  H616 PHY
   6
   7 The USB PHY IP in the Allwinner H616 SoC requires a quirk that involves
   8 some resources from port 2's PHY and HCI IP. In particular the PMU clock
   9 for port 2 must be surely ungated before accessing the REG_HCI_PHY_CTL
  10 register of port 2. To allow each USB port to be controlled
  11 independently of port 2, we need a handle to that particular PMU clock
  12 in the *PHY* node, as the HCI and PHY part might be handled by separate
  13 drivers.
  14
  15 Add that clock to the requirements of the H616 PHY binding, so that a
  16 PHY driver can apply the quirk in isolation, without requiring help from
  17 port 2's HCI driver.
  18
  19 Signed-off-by: Andre Przywara <andre.przywara@arm.com>
  20 ---
  21  .../phy/allwinner,sun8i-h3-usb-phy.yaml       | 26 +++++++++++++++++++
  22  1 file changed, 26 insertions(+)
  23
  24 --- a/Documentation/devicetree/bindings/phy/allwinner,sun8i-h3-usb-phy.yaml
  25 +++ b/Documentation/devicetree/bindings/phy/allwinner,sun8i-h3-usb-phy.yaml
  26 @@ -36,18 +36,22 @@ properties:
  27        - const: pmu3
  28
  29    clocks:
  30 +    minItems: 4
  31      items:
  32        - description: USB OTG PHY bus clock
  33        - description: USB Host 0 PHY bus clock
  34        - description: USB Host 1 PHY bus clock
  35        - description: USB Host 2 PHY bus clock
  36 +      - description: PMU clock for host port 2
  37
  38    clock-names:
  39 +    minItems: 4
  40      items:
  41        - const: usb0_phy
  42        - const: usb1_phy
  43        - const: usb2_phy
  44        - const: usb3_phy
  45 +      - const: pmu2_clk
  46
  47    resets:
  48      items:
  49 @@ -96,6 +100,28 @@ required:
  50    - resets
  51    - reset-names
  52
  53 +allOf:
  54 +  - if:
  55 +      properties:
  56 +        compatible:
  57 +          contains:
  58 +            enum:
  59 +              - allwinner,sun50i-h616-usb-phy
  60 +    then:
  61 +      properties:
  62 +        clocks:
  63 +          minItems: 5
  64 +
  65 +        clock-names:
  66 +          minItems: 5
  67 +    else:
  68 +      properties:
  69 +        clocks:
  70 +          maxItems: 4
  71 +
  72 +        clock-names:
  73 +          maxItems: 4
  74 +
  75  additionalProperties: false
  76
  77  examples: