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

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

diff --git a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
index a39670a..712fda2 100644 (file)
--- a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
+++ b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
@@ -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,

diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c
index 5252ce4..5b3e4da 100644 (file)
--- a/drivers/rtc/rtc-sun6i.c
+++ b/drivers/rtc/rtc-sun6i.c
@@ -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