linux-kernel - [RFC PATCH 6/7] [DO NOT MERGE] clk: sunxi-ng: Add support for H6

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Message-Id: <20210901053951.60952-7-samuel@sholland.org>
Date:   Wed,  1 Sep 2021 00:39:50 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Samuel Holland <samuel@...lland.org>
Subject: [RFC PATCH 6/7] [DO NOT MERGE] clk: sunxi-ng: Add support for H6

H6 has IOSC calibration and an ext-osc32k input.

H6 has the osc32k mux and the rtc-32k mux, but no fanout mux.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---
 drivers/clk/sunxi-ng/sun50i-rtc-ccu.c | 49 +++++++++++++++++++++++++++
 drivers/rtc/rtc-sun6i.c               | 17 ----------
 2 files changed, 49 insertions(+), 17 deletions(-)

diff --git a/drivers/clk/sunxi-ng/sun50i-rtc-ccu.c b/drivers/clk/sunxi-ng/sun50i-rtc-ccu.c
index 1dfa05c2f0e9..9603dc0d3d7b 100644
--- a/drivers/clk/sunxi-ng/sun50i-rtc-ccu.c
+++ b/drivers/clk/sunxi-ng/sun50i-rtc-ccu.c
@@ -227,6 +227,16 @@ static SUNXI_CCU_MUX_DATA_WITH_GATE(osc32k_fanout_clk, "rtc-32k-fanout",
 static SUNXI_CCU_M_FW_WITH_GATE(rtc_spi_clk, "rtc-spi", "ahb",
 				0x310, 0, 5, BIT(31), 0);
 
+static struct ccu_common *sun50i_h6_rtc_ccu_clks[] = {
+	&iosc_clk,
+	&iosc_32k_clk,
+	&ext_osc32k_gate_clk.common,
+	&osc32k_clk.common,
+	&osc24M_32k_clk.common,
+	&rtc_32k_mux_clk.common,
+	&osc32k_fanout_clk.common,
+};
+
 static struct ccu_common *sun50i_h616_rtc_ccu_clks[] = {
 	&iosc_clk,
 	&iosc_32k_clk,
@@ -246,6 +256,21 @@ static struct ccu_common *sun50i_r329_rtc_ccu_clks[] = {
 	&rtc_spi_clk.common,
 };
 
+static struct clk_hw_onecell_data sun50i_h6_rtc_ccu_hw_clks = {
+	.num = CLK_NUMBER,
+	.hws = {
+		[CLK_OSC32K]		= &osc32k_clk.common.hw,
+		[CLK_OSC32K_FANOUT]	= &osc32k_fanout_clk.common.hw,
+		[CLK_IOSC]		= &iosc_clk.hw,
+
+		[CLK_IOSC_32K]		= &iosc_32k_clk.hw,
+		[CLK_EXT_OSC32K_GATE]	= &ext_osc32k_gate_clk.common.hw,
+		[CLK_OSC24M_32K]	= &osc24M_32k_clk.common.hw,
+		[CLK_RTC_32K]		= &rtc_32k_mux_clk.common.hw,
+		[CLK_RTC_SPI]		= NULL,
+	},
+};
+
 static struct clk_hw_onecell_data sun50i_h616_rtc_ccu_hw_clks = {
 	.num = CLK_NUMBER,
 	.hws = {
@@ -276,6 +301,13 @@ static struct clk_hw_onecell_data sun50i_r329_rtc_ccu_hw_clks = {
 	},
 };
 
+static const struct sunxi_ccu_desc sun50i_h6_rtc_ccu_desc = {
+	.ccu_clks	= sun50i_h6_rtc_ccu_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sun50i_h6_rtc_ccu_clks),
+
+	.hw_clks	= &sun50i_h6_rtc_ccu_hw_clks,
+};
+
 static const struct sunxi_ccu_desc sun50i_h616_rtc_ccu_desc = {
 	.ccu_clks	= sun50i_h616_rtc_ccu_clks,
 	.num_ccu_clks	= ARRAY_SIZE(sun50i_h616_rtc_ccu_clks),
@@ -318,6 +350,23 @@ static void __init sunxi_rtc_ccu_init(struct device_node *node,
 	of_sunxi_ccu_probe(node, reg, desc);
 }
 
+static void __init sun50i_h6_rtc_ccu_setup(struct device_node *node)
+{
+	struct clk_init_data *init;
+
+	have_iosc_calib = 1;
+
+	/* Casting away the const from a pointer to a non-const anonymous object... */
+	init = (struct clk_init_data *)osc32k_fanout_clk.common.hw.init;
+
+	/* Fanout only has one parent: osc32k. */
+	init->num_parents = 1;
+
+	sunxi_rtc_ccu_init(node, &sun50i_h6_rtc_ccu_desc);
+}
+CLK_OF_DECLARE_DRIVER(sun50i_h6_rtc_ccu, "allwinner,sun50i-h6-rtc",
+		      sun50i_h6_rtc_ccu_setup);
+
 static void __init sun50i_h616_rtc_ccu_setup(struct device_node *node)
 {
 	have_iosc_calib = 1;
diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c
index adec1b14a8de..f7cbbf57f112 100644
--- a/drivers/rtc/rtc-sun6i.c
+++ b/drivers/rtc/rtc-sun6i.c
@@ -363,23 +363,6 @@ 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
-- 
2.31.1