linux-kernel - [PATCH v5 6/9] arm64: dts: allwinner: h6: Enable CPU opp tables for Orange Pi 3

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200420130021.3841-7-peron.clem@gmail.com>
Date:   Mon, 20 Apr 2020 15:00:18 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        Clément Péron <peron.clem@...il.com>
Subject: [PATCH v5 6/9] arm64: dts: allwinner: h6: Enable CPU opp tables for Orange Pi 3

Enable CPU opp tables for Orange Pi 3.

This needs to change the CPU regulator max voltage to fit
the OPP table.

Also add the ramp-delay information to avoid any out of spec
running as the regulator is slower at reaching the voltage
requested compare to the PLL reaching the frequency.

There is no such information for AXP805 but similar PMIC (AXP813)
has a DVM (Dynamic Voltage scaling Management) ramp rate equal
to 2500uV/us.

Signed-off-by: Clément Péron <peron.clem@...il.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
index 47f579610dcc..15c9dd8c4479 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
@@ -4,6 +4,7 @@
 /dts-v1/;
 
 #include "sun50i-h6.dtsi"
+#include "sun50i-h6-cpu-opp.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
 
@@ -257,6 +258,7 @@
 				regulator-always-on;
 				regulator-min-microvolt = <800000>;
 				regulator-max-microvolt = <1160000>;
+				regulator-ramp-delay = <2500>;
 				regulator-name = "vdd-cpu";
 			};
 
@@ -264,6 +266,7 @@
 				regulator-enable-ramp-delay = <32000>;
 				regulator-min-microvolt = <810000>;
 				regulator-max-microvolt = <1080000>;
+				regulator-ramp-delay = <2500>;
 				regulator-name = "vdd-gpu";
 			};
 
-- 
2.20.1