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clk: sunxi-ng: sun6i-rtc: Add A523 specifics

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[ Upstream commit 7aa8781f379c32c31bd78f1408a31765b2297c43 ]

The A523's RTC block is backward compatible with the R329's, but it also
has a calibration function for its internal oscillator, which would
allow it to provide a clock rate closer to the desired 32.768 KHz. This
is useful on the Radxa Cubie A5E, which does not have an external 32.768
KHz crystal.

Add new compatible-specific data for it.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://patch.msgid.link/20250909170947.2221611-1-wens@kernel.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chen-Yu Tsai
2025-09-10 01:09:47 +08:00
committed by Greg Kroah-Hartman
parent 3c5e016d23
commit 30e5bbcb98
1 changed files with 11 additions and 0 deletions
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11
drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
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@@ -325,6 +325,13 @@ static const struct sun6i_rtc_match_data sun50i_r329_rtc_ccu_data = {
.osc32k_fanout_nparents = ARRAY_SIZE(sun50i_r329_osc32k_fanout_parents),
};
static const struct sun6i_rtc_match_data sun55i_a523_rtc_ccu_data = {
.have_ext_osc32k = true,
.have_iosc_calibration = true,
.osc32k_fanout_parents = sun50i_r329_osc32k_fanout_parents,
.osc32k_fanout_nparents = ARRAY_SIZE(sun50i_r329_osc32k_fanout_parents),
};
static const struct of_device_id sun6i_rtc_ccu_match[] = {
{
.compatible = "allwinner,sun50i-h616-rtc",
@@ -334,6 +341,10 @@ static const struct of_device_id sun6i_rtc_ccu_match[] = {
.compatible = "allwinner,sun50i-r329-rtc",
.data = &sun50i_r329_rtc_ccu_data,
},
{
.compatible = "allwinner,sun55i-a523-rtc",
.data = &sun55i_a523_rtc_ccu_data,
},
{},
};