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arm64: dts: qcom: db820c: Add vdd_gfx and tie it into mmcc

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Add the SPMI regulator node in the PMI8994, use it to give us VDD_GX
at a fixed max nominal voltage for the db820c and specify this as supply
for the MMSS GPU_GX GDSC.

With the introduction of CPR support the range for VDD_GX should be
expanded.

Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Link: https://lore.kernel.org/r/20200417070044.1376212-4-bjorn.andersson@linaro.org
[bjorn: Split between pmi8994 and db820c, changed voltage, rewrote commit message]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Rajendra Nayak 2020-04-17 00:00:43 -07:00 • committed by Bjorn Andersson
parent 756d534b3e
commit 2317b87a2a
2 changed files with 19 additions and 0 deletions
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13
arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
View file

@ -241,6 +241,10 @@
status = "okay"; status = "okay";
}; };
&mmcc {
vdd-gfx-supply = <&vdd_gfx>;
};
&msmgpio { &msmgpio {
gpio-line-names = gpio-line-names =
"[SPI0_DOUT]", /* GPIO_0, BLSP1_SPI_MOSI, LSEC pin 14 */ "[SPI0_DOUT]", /* GPIO_0, BLSP1_SPI_MOSI, LSEC pin 14 */
@ -678,6 +682,15 @@
}; };
}; };
&pmi8994_spmi_regulators {
vdd_gfx: s2@1700 {
reg = <0x1700 0x100>;
regulator-name = "VDD_GFX";
regulator-min-microvolt = <980000>;
regulator-max-microvolt = <980000>;
};
};
&rpm_requests { &rpm_requests {
pm8994-regulators { pm8994-regulators {
compatible = "qcom,rpm-pm8994-regulators"; compatible = "qcom,rpm-pm8994-regulators";

6
arch/arm64/boot/dts/qcom/pmi8994.dtsi
View file

@ -26,5 +26,11 @@
reg = <0x3 SPMI_USID>; reg = <0x3 SPMI_USID>;
#address-cells = <1>; #address-cells = <1>;
#size-cells = <0>; #size-cells = <0>;
pmi8994_spmi_regulators: regulators {
compatible = "qcom,pmi8994-regulators";
#address-cells = <1>;
#size-cells = <1>;
};
}; };
}; };