rtc: sun6i: disable automatic clock input switching
The V3(s) will detect a valid external low frequency clock and if it is not present will automatically switch to the internal one. This might hide bugs and (hardware) configuration errors. It's even worse because the internal RTC runs significantly slower (32.000Hz vs 32.768Hz). Fortunately for us, the V3(s) has an (undocumented) bypass of this switching and the driver already supports it by setting the .has_auto_swt flag. Signed-off-by: Michael Walle <mwalle@kernel.org> Acked-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20240730194905.2587202-1-mwalle@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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@ -402,6 +402,7 @@ CLK_OF_DECLARE_DRIVER(sun8i_r40_rtc_clk, "allwinner,sun8i-r40-rtc",
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static const struct sun6i_rtc_clk_data sun8i_v3_rtc_data = {
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.rc_osc_rate = 32000,
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.has_out_clk = 1,
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.has_auto_swt = 1,
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};
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static void __init sun8i_v3_rtc_clk_init(struct device_node *node)
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