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clk: sunxi-ng: sun6i-rtc: Add support for H6

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H6 supports IOSC calibration and an ext-osc32k input. Unlike newer SoCs,
it has a single parent for its fanout clock.

Add support for H6 in the CCU driver, replacing the support in the
existing early OF clock provider.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220203021736.13434-7-samuel@sholland.org
This commit is contained in:
Samuel Holland 2022-02-02 20:17:36 -06:00 committed by Alexandre Belloni
parent d91612d7f0
commit 1738890a31
2 changed files with 15 additions and 17 deletions
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15
drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
View File

@ -295,6 +295,10 @@ static const struct sunxi_ccu_desc sun6i_rtc_ccu_desc = {
.hw_clks = &sun6i_rtc_ccu_hw_clks,
};
static const struct clk_parent_data sun50i_h6_osc32k_fanout_parents[] = {
{ .hw = &osc32k_clk.common.hw },
};
static const struct clk_parent_data sun50i_h616_osc32k_fanout_parents[] = {
{ .hw = &osc32k_clk.common.hw },
{ .fw_name = "pll-32k" },
@ -307,6 +311,13 @@ static const struct clk_parent_data sun50i_r329_osc32k_fanout_parents[] = {
{ .hw = &osc24M_32k_clk.common.hw }
};
static const struct sun6i_rtc_match_data sun50i_h6_rtc_ccu_data = {
.have_ext_osc32k = true,
.have_iosc_calibration = true,
.osc32k_fanout_parents = sun50i_h6_osc32k_fanout_parents,
.osc32k_fanout_nparents = ARRAY_SIZE(sun50i_h6_osc32k_fanout_parents),
};
static const struct sun6i_rtc_match_data sun50i_h616_rtc_ccu_data = {
.have_iosc_calibration = true,
.rtc_32k_single_parent = true,
@ -321,6 +332,10 @@ static const struct sun6i_rtc_match_data sun50i_r329_rtc_ccu_data = {
};
static const struct of_device_id sun6i_rtc_ccu_match[] = {
{
.compatible = "allwinner,sun50i-h6-rtc",
.data = &sun50i_h6_rtc_ccu_data,
},
{
.compatible = "allwinner,sun50i-h616-rtc",
.data = &sun50i_h616_rtc_ccu_data,

17
drivers/rtc/rtc-sun6i.c
View File

@ -370,23 +370,6 @@ CLK_OF_DECLARE_DRIVER(sun8i_h3_rtc_clk, "allwinner,sun8i-h3-rtc",
CLK_OF_DECLARE_DRIVER(sun50i_h5_rtc_clk, "allwinner,sun50i-h5-rtc",
sun8i_h3_rtc_clk_init);
static const struct sun6i_rtc_clk_data sun50i_h6_rtc_data = {
.rc_osc_rate = 16000000,
.fixed_prescaler = 32,
.has_prescaler = 1,
.has_out_clk = 1,
.export_iosc = 1,
.has_losc_en = 1,
.has_auto_swt = 1,
};
static void __init sun50i_h6_rtc_clk_init(struct device_node *node)
{
sun6i_rtc_clk_init(node, &sun50i_h6_rtc_data);
}
CLK_OF_DECLARE_DRIVER(sun50i_h6_rtc_clk, "allwinner,sun50i-h6-rtc",
sun50i_h6_rtc_clk_init);
/*
* The R40 user manual is self-conflicting on whether the prescaler is
* fixed or configurable. The clock diagram shows it as fixed, but there