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From: dianders@chromium.org (Douglas Anderson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] arm64: dts: qcom: sdm845-mtp: Add nodes for USB
Date: Fri, 10 Aug 2018 14:51:50 -0700
Message-ID: <20180810215150.82490-4-dianders@chromium.org> (raw)
In-Reply-To: <20180810215150.82490-1-dianders@chromium.org>

Set the various nodes to "okay" and hook up the regulators.

NOTE: For now the main USB port (the one that goes out the Type C
connector) is forced to host.  Eventually someone will need to get the
Type C detection hooked up and get this all integrated with the
PMI8998 PMIC.  The reason for forcing to "host" in the meantime is
that this will leave us with one "host" and one "peripheral" port.

In order for host mode this to work, we assume that the bootloader
left things configured enough for us.  Apparently the magic for that
is is to do these writes on pmi8998:
- pm_comm_write_byte(2, 0x1153, 0x2C, 0);
- pm_comm_write_byte(2, 0x1152, 0x07, 0);
- pm_comm_write_byte(2, 0x1140, 0x00, 0);
- pm_comm_write_byte(2, 0x1140, 0x01, 0);

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

Changes in v2: None

 arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 61 +++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
index 839ef9125bf4..eb9400bf2cbf 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
@@ -480,6 +480,67 @@
 	status = "okay";
 };
 
+&usb_1 {
+	status = "okay";
+};
+
+&usb_1_dwc3 {
+	/* Until we have Type C hooked up we'll force this as host. */
+	dr_mode = "host";
+};
+
+&usb_1_hsphy {
+	status = "okay";
+
+	vdd-supply = <&vdda_usb1_ss_core>;
+	vdda-pll-supply = <&vdda_qusb_hs0_1p8>;
+	vdda-phy-dpdm-supply = <&vdda_qusb_hs0_3p1>;
+
+	qcom,imp-res-offset-value = <8>;
+	qcom,hstx-trim-value = <QUSB2_V2_HSTX_TRIM_21_6_MA>;
+	qcom,preemphasis-level = <QUSB2_V2_PREEMPHASIS_5_PERCENT>;
+	qcom,preemphasis-width = <QUSB2_V2_PREEMPHASIS_WIDTH_HALF_BIT>;
+};
+
+&usb_1_qmpphy {
+	status = "okay";
+
+	vdda-phy-supply = <&vdda_usb1_ss_1p2>;
+	vdda-pll-supply = <&vdda_usb1_ss_core>;
+};
+
+&usb_2 {
+	status = "okay";
+};
+
+&usb_2_dwc3 {
+	/*
+	 * Though the USB block on SDM845 can support host, there's no vbus
+	 * signal for this port on MTP.  Thus (unless you have a non-compliant
+	 * hub that works without vbus) the only sensible thing is to force
+	 * peripheral mode.
+	 */
+	dr_mode = "peripheral";
+};
+
+&usb_2_hsphy {
+	status = "okay";
+
+	vdd-supply = <&vdda_usb2_ss_core>;
+	vdda-pll-supply = <&vdda_qusb_hs0_1p8>;
+	vdda-phy-dpdm-supply = <&vdda_qusb_hs0_3p1>;
+
+	qcom,imp-res-offset-value = <8>;
+	qcom,hstx-trim-value = <QUSB2_V2_HSTX_TRIM_22_8_MA>;
+};
+
+&usb_2_qmpphy {
+	status = "okay";
+
+	vdda-phy-supply = <&vdda_usb2_ss_1p2>;
+	vdda-pll-supply = <&vdda_usb2_ss_core>;
+};
+
 /* PINCTRL - additions to nodes defined in sdm845.dtsi */
 
 &qup_i2c10_default {
-- 
2.18.0.597.ga71716f1ad-goog

  parent reply index

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-10 21:51 [PATCH 0/3] arm64: dts: sdm845: Add RPMh-regulators and usb Douglas Anderson
2018-08-10 21:51 ` [PATCH 1/3] arm64: dts: qcom: sdm845: Add USB-related nodes Douglas Anderson
2018-08-20 18:17   ` Stephen Boyd
2018-08-22 17:37     ` Doug Anderson
2018-08-10 21:51 ` [PATCH 2/3] arm64: dts: qcom: sdm845-mtp: Add RPMh VRM/XOB regulators Douglas Anderson
2018-08-12  7:06   ` kbuild test robot
2018-08-20 18:18   ` Stephen Boyd
2018-08-22 17:38     ` Doug Anderson
2018-08-10 21:51 ` Douglas Anderson [this message]
  -- strict thread matches above, loose matches on Subject: below --
2018-07-10 22:01 [PATCH 0/3] arm64: dts: sdm845: Add RPMh-regulators and usb Douglas Anderson
2018-07-10 22:02 ` [PATCH 3/3] arm64: dts: qcom: sdm845-mtp: Add nodes for USB Douglas Anderson

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