[RESEND PATCH v5 3/5] ARM: dts: da850-lcdk: enable cpufreq
From: Bartosz Golaszewski <hidden>
Date: 2019-05-27 08:23:13
Also in:
linux-devicetree, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: David Lechner <david@lechnology.com> Add a fixed regulator for the da850-lcdk board along with board-specific CPU configuration. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Bartosz Golaszewski <redacted> --- arch/arm/boot/dts/da850-lcdk.dts | 36 ++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+)
diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
index 26f453dc8370..b36d5e36bcf1 100644
--- a/arch/arm/boot/dts/da850-lcdk.dts
+++ b/arch/arm/boot/dts/da850-lcdk.dts@@ -155,12 +155,48 @@ }; }; }; + + cvdd: regulator0 { + compatible = "regulator-fixed"; + regulator-name = "cvdd"; + regulator-min-microvolt = <1300000>; + regulator-max-microvolt = <1300000>; + regulator-always-on; + regulator-boot-on; + }; }; &ref_clk { clock-frequency = <24000000>; }; +&cpu { + cpu-supply = <&cvdd>; +}; + +/* + * LCDK has a fixed CVDD of 1.3V, so only operating points >= 300MHz are + * valid. Unfortunately due to a problem with the DA8XX OHCI controller, we + * can't enable more than one OPP by default, since the controller sometimes + * becomes unresponsive after a transition. Fix the frequency at 456 MHz. + */ + +&opp_100 { + status = "disabled"; +}; + +&opp_200 { + status = "disabled"; +}; + +&opp_300 { + status = "disabled"; +}; + +&opp_456 { + status = "okay"; +}; + &pmx_core { status = "okay";
--
2.21.0
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