From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Sekhar Nori <nsekhar@ti.com>, Kevin Hilman <khilman@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
David Lechner <david@lechnology.com>,
Adam Ford <aford173@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH v5 3/5] ARM: dts: da850-lcdk: enable cpufreq
Date: Wed, 17 Apr 2019 17:26:59 +0200 [thread overview]
Message-ID: <20190417152701.23391-4-brgl@bgdev.pl> (raw)
In-Reply-To: <20190417152701.23391-1-brgl@bgdev.pl>
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 <bgolaszewski@baylibre.com>
---
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
next prev parent reply other threads:[~2019-04-17 15:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-17 15:26 [PATCH v5 0/5] ARM: da850: enable cpufreq in DT mode Bartosz Golaszewski
2019-04-17 15:26 ` [PATCH v5 1/5] ARM: dts: da850: add cpu node and operating points to DT Bartosz Golaszewski
2019-04-17 15:26 ` [PATCH v5 2/5] ARM: dts: da850-lego-ev3: enable cpufreq Bartosz Golaszewski
2019-04-17 15:26 ` Bartosz Golaszewski [this message]
2019-04-17 15:27 ` [PATCH v5 4/5] ARM: dts: da850-evm: " Bartosz Golaszewski
2019-04-17 17:09 ` Adam Ford
2019-04-23 9:15 ` Bartosz Golaszewski
2019-05-24 16:58 ` Bartosz Golaszewski
2019-04-17 15:27 ` [PATCH v5 5/5] ARM: davinci_all_defconfig: Enable CPUFREQ_DT Bartosz Golaszewski
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