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| author | Chen-Yu Tsai <wens@csie.org> | 2025-09-13 18:24:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-15 12:03:32 +0200 |
| commit | ad8b40851e73f8130bc4915a801121648ebab574 (patch) | |
| tree | ab824d1cde7921917a4524ced0efe63f8e5d5ddb /arch | |
| parent | a5be513fc56fdcae6cdfc35234ae847e818acb82 (diff) | |
| download | linux-ad8b40851e73f8130bc4915a801121648ebab574.tar.gz linux-ad8b40851e73f8130bc4915a801121648ebab574.tar.bz2 linux-ad8b40851e73f8130bc4915a801121648ebab574.zip | |
arm64: dts: allwinner: t527: avaota-a1: hook up external 32k crystal
[ Upstream commit 3d5e1ba00af8dd34ae1e573c2c07e00b5ec65267 ]
When the board was added, its external 32.768 KHz crystal was described
but not hooked up correctly. This meant the device had to fall back to
the SoC's internal oscillator or divide a 32 KHz clock from the main
oscillator, neither of which are accurate for the RTC. As a result the
RTC clock will drift badly.
Hook the crystal up to the RTC block and request the correct clock rate.
Fixes: dbe54efa32af ("arm64: dts: allwinner: a523: add Avaota-A1 router support")
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://patch.msgid.link/20250913102450.3935943-2-wens@kernel.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts index e7713678208d..4e71055fbd15 100644 --- a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts +++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts @@ -309,6 +309,14 @@ vcc-pm-supply = <®_aldo3>; }; +&rtc { + clocks = <&r_ccu CLK_BUS_R_RTC>, <&osc24M>, + <&r_ccu CLK_R_AHB>, <&ext_osc32k>; + clock-names = "bus", "hosc", "ahb", "ext-osc32k"; + assigned-clocks = <&rtc CLK_OSC32K>; + assigned-clock-rates = <32768>; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pb_pins>; |