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- From 6964affe65066651eca21e97247d3b7cac5153dc Mon Sep 17 00:00:00 2001
- From: Andre Przywara <[email protected]>
- Date: Mon, 31 Oct 2022 11:13:53 +0000
- Subject: [PATCH] dt-bindings: phy: Add special clock for Allwinner H616 PHY
- The USB PHY IP in the Allwinner H616 SoC requires a quirk that involves
- some resources from port 2's PHY and HCI IP. In particular the PMU clock
- for port 2 must be surely ungated before accessing the REG_HCI_PHY_CTL
- register of port 2. To allow each USB port to be controlled
- independently of port 2, we need a handle to that particular PMU clock
- in the *PHY* node, as the HCI and PHY part might be handled by separate
- drivers.
- Add that clock to the requirements of the H616 PHY binding, so that a
- PHY driver can apply the quirk in isolation, without requiring help from
- port 2's HCI driver.
- Signed-off-by: Andre Przywara <[email protected]>
- Reviewed-by: Rob Herring <[email protected]>
- Link: https://lore.kernel.org/r/[email protected]
- Signed-off-by: Vinod Koul <[email protected]>
- ---
- .../phy/allwinner,sun8i-h3-usb-phy.yaml | 26 +++++++++++++++++++
- 1 file changed, 26 insertions(+)
- --- a/Documentation/devicetree/bindings/phy/allwinner,sun8i-h3-usb-phy.yaml
- +++ b/Documentation/devicetree/bindings/phy/allwinner,sun8i-h3-usb-phy.yaml
- @@ -36,18 +36,22 @@ properties:
- - const: pmu3
-
- clocks:
- + minItems: 4
- items:
- - description: USB OTG PHY bus clock
- - description: USB Host 0 PHY bus clock
- - description: USB Host 1 PHY bus clock
- - description: USB Host 2 PHY bus clock
- + - description: PMU clock for host port 2
-
- clock-names:
- + minItems: 4
- items:
- - const: usb0_phy
- - const: usb1_phy
- - const: usb2_phy
- - const: usb3_phy
- + - const: pmu2_clk
-
- resets:
- items:
- @@ -96,6 +100,28 @@ required:
- - resets
- - reset-names
-
- +allOf:
- + - if:
- + properties:
- + compatible:
- + contains:
- + enum:
- + - allwinner,sun50i-h616-usb-phy
- + then:
- + properties:
- + clocks:
- + minItems: 5
- +
- + clock-names:
- + minItems: 5
- + else:
- + properties:
- + clocks:
- + maxItems: 4
- +
- + clock-names:
- + maxItems: 4
- +
- additionalProperties: false
-
- examples:
|
