From: Ryan Walklin <ryan@testtoast.com>
To: Yangtao Li <tiny.windzz@gmail.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Viresh Kumar <vireshk@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Samuel Holland <samuel@sholland.org>,
Andre Przywara <andre.przywara@arm.com>
Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-sunxi@lists.linux.dev,
Chris Morgan <macroalpha82@gmail.com>,
Sudeep Holla <sudeep.holla@arm.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>, Nishanth Menon <nm@ti.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Ryan Walklin <ryan@testtoast.com>
Subject: [PATCH 1/3] cpufreq: sun50i: add Allwinner H700 speed bin
Date: Fri, 7 Jun 2024 21:20:33 +1200 [thread overview]
Message-ID: <20240607092140.33112-2-ryan@testtoast.com> (raw)
In-Reply-To: <20240607092140.33112-1-ryan@testtoast.com>
Support for the Allwinner H618, H618 and H700 was added to the sun50i
cpufreq-nvmem driver recently [1] however at the time some operating
points supported by the H700 (1.008, 1.032 and 1.512 GHz) and in use by
vendor BSPs were found to be unstable during testing, so the H700 speed
bin and the 1.032 GHz OPP were not included in the mainline driver.
Retesting with kernel 6.10rc2 (which carries additional fixes for the
driver) now shows stable operation with these points.
Add the H700 speed bin to the driver.
Signed-off-by: Ryan Walklin <ryan@testtoast.com>
--
[1] https://lore.kernel.org/linux-sunxi/20240418154408.1740047-1-andre.przywara@arm.com
---
drivers/cpufreq/sun50i-cpufreq-nvmem.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
index 0b882765cd66f..969f22aadd950 100644
--- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@@ -91,6 +91,9 @@ static u32 sun50i_h616_efuse_xlate(u32 speedbin)
case 0x5d00:
value = 0;
break;
+ case 0x6c00:
+ value = 5;
+ break;
default:
pr_warn("sun50i-cpufreq-nvmem: unknown speed bin 0x%x, using default bin 0\n",
speedbin & 0xffff);
--
2.45.2
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next prev parent reply other threads:[~2024-06-07 9:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-07 9:20 [PATCH 0/3] cpufreq: sun50i: add Allwinner H700 speed bin and additional OPPs Ryan Walklin
2024-06-07 9:20 ` Ryan Walklin [this message]
2024-06-19 0:00 ` [PATCH 1/3] cpufreq: sun50i: add Allwinner H700 speed bin Andre Przywara
2024-06-19 3:16 ` Viresh Kumar
2024-06-07 9:20 ` [PATCH 2/3] arm64: dts: allwinner: h616: add additional CPU OPPs for the H700 Ryan Walklin
2024-06-19 0:00 ` Andre Przywara
2024-06-07 9:20 ` [PATCH 3/3] arm64: dts: allwinner: rg35xx: Enable DVFS CPU frequency scaling Ryan Walklin
2024-06-19 0:00 ` Andre Przywara
2024-06-22 15:17 ` (subset) [PATCH 0/3] cpufreq: sun50i: add Allwinner H700 speed bin and additional OPPs Chen-Yu Tsai
2024-06-25 15:21 ` Philippe Simons
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