clk: mediatek: Add MT8186 apmixedsys clock support

Add MT8186 apmixedsys clock controller which provides Plls
generated from SoC.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Link: https://lore.kernel.org/r/20220409132251.31725-6-chun-jie.chen@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

1 files changed, 133 insertions, 0 deletions

diff --git a/drivers/clk/mediatek/clk-mt8186-apmixedsys.c b/drivers/clk/mediatek/clk-mt8186-apmixedsys.c
new file mode 100644
index 000000000000..ab702c397a26
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8186-apmixedsys.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/mt8186-clk.h>
+
+#include "clk-mtk.h"
+#include "clk-pll.h"
+
+#define MT8186_PLL_FMAX		(3800UL * MHZ)
+#define MT8186_PLL_FMIN		(1500UL * MHZ)
+#define MT8186_INTEGER_BITS	(8)
+
+#define PLL(_id, _name, _reg, _pwr_reg, _en_mask, _flags,		\
+	    _rst_bar_mask, _pcwbits, _pd_reg, _pd_shift,		\
+	    _tuner_reg, _tuner_en_reg, _tuner_en_bit,			\
+	    _pcw_reg) {							\
+		.id = _id,						\
+		.name = _name,						\
+		.reg = _reg,						\
+		.pwr_reg = _pwr_reg,					\
+		.en_mask = _en_mask,					\
+		.flags = _flags,					\
+		.rst_bar_mask = _rst_bar_mask,				\
+		.fmax = MT8186_PLL_FMAX,				\
+		.fmin = MT8186_PLL_FMIN,				\
+		.pcwbits = _pcwbits,					\
+		.pcwibits = MT8186_INTEGER_BITS,			\
+		.pd_reg = _pd_reg,					\
+		.pd_shift = _pd_shift,					\
+		.tuner_reg = _tuner_reg,				\
+		.tuner_en_reg = _tuner_en_reg,				\
+		.tuner_en_bit = _tuner_en_bit,				\
+		.pcw_reg = _pcw_reg,					\
+		.pcw_shift = 0,						\
+		.pcw_chg_reg = 0,					\
+		.en_reg = 0,						\
+		.pll_en_bit = 0,					\
+	}
+
+static const struct mtk_pll_data plls[] = {
+	/*
+	 * armpll_ll/armpll_bl/ccipll are main clock source of AP MCU,
+	 * should not be closed in Linux world.
+	 */
+	PLL(CLK_APMIXED_ARMPLL_LL, "armpll_ll", 0x0204, 0x0210, 0,
+	    PLL_AO, 0, 22, 0x0208, 24, 0, 0, 0, 0x0208),
+	PLL(CLK_APMIXED_ARMPLL_BL, "armpll_bl", 0x0214, 0x0220, 0,
+	    PLL_AO, 0, 22, 0x0218, 24, 0, 0, 0, 0x0218),
+	PLL(CLK_APMIXED_CCIPLL, "ccipll", 0x0224, 0x0230, 0,
+	    PLL_AO, 0, 22, 0x0228, 24, 0, 0, 0, 0x0228),
+	PLL(CLK_APMIXED_MAINPLL, "mainpll", 0x0244, 0x0250, 0xff000000,
+	    HAVE_RST_BAR, BIT(23), 22, 0x0248, 24, 0, 0, 0, 0x0248),
+	PLL(CLK_APMIXED_UNIV2PLL, "univ2pll", 0x0324, 0x0330, 0xff000000,
+	    HAVE_RST_BAR, BIT(23), 22, 0x0328, 24, 0, 0, 0, 0x0328),
+	PLL(CLK_APMIXED_MSDCPLL, "msdcpll", 0x038C, 0x0398, 0,
+	    0, 0, 22, 0x0390, 24, 0, 0, 0, 0x0390),
+	PLL(CLK_APMIXED_MMPLL, "mmpll", 0x0254, 0x0260, 0,
+	    0, 0, 22, 0x0258, 24, 0, 0, 0, 0x0258),
+	PLL(CLK_APMIXED_NNAPLL, "nnapll", 0x035C, 0x0368, 0,
+	    0, 0, 22, 0x0360, 24, 0, 0, 0, 0x0360),
+	PLL(CLK_APMIXED_NNA2PLL, "nna2pll", 0x036C, 0x0378, 0,
+	    0, 0, 22, 0x0370, 24, 0, 0, 0, 0x0370),
+	PLL(CLK_APMIXED_ADSPPLL, "adsppll", 0x0304, 0x0310, 0,
+	    0, 0, 22, 0x0308, 24, 0, 0, 0, 0x0308),
+	PLL(CLK_APMIXED_MFGPLL, "mfgpll", 0x0314, 0x0320, 0,
+	    0, 0, 22, 0x0318, 24, 0, 0, 0, 0x0318),
+	PLL(CLK_APMIXED_TVDPLL, "tvdpll", 0x0264, 0x0270, 0,
+	    0, 0, 22, 0x0268, 24, 0, 0, 0, 0x0268),
+	PLL(CLK_APMIXED_APLL1, "apll1", 0x0334, 0x0344, 0,
+	    0, 0, 32, 0x0338, 24, 0x0040, 0x000C, 0, 0x033C),
+	PLL(CLK_APMIXED_APLL2, "apll2", 0x0348, 0x0358, 0,
+	    0, 0, 32, 0x034C, 24, 0x0044, 0x000C, 5, 0x0350),
+};
+
+static const struct of_device_id of_match_clk_mt8186_apmixed[] = {
+	{ .compatible = "mediatek,mt8186-apmixedsys", },
+	{}
+};
+
+static int clk_mt8186_apmixed_probe(struct platform_device *pdev)
+{
+	struct clk_onecell_data *clk_data;
+	struct device_node *node = pdev->dev.of_node;
+	int r;
+
+	clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
+
+	r = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
+	if (r)
+		goto free_apmixed_data;
+
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		goto unregister_plls;
+
+	platform_set_drvdata(pdev, clk_data);
+
+	return r;
+
+unregister_plls:
+	mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
+free_apmixed_data:
+	mtk_free_clk_data(clk_data);
+	return r;
+}
+
+static int clk_mt8186_apmixed_remove(struct platform_device *pdev)
+{
+	struct device_node *node = pdev->dev.of_node;
+	struct clk_onecell_data *clk_data = platform_get_drvdata(pdev);
+
+	of_clk_del_provider(node);
+	mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
+	mtk_free_clk_data(clk_data);
+
+	return 0;
+}
+
+static struct platform_driver clk_mt8186_apmixed_drv = {
+	.probe = clk_mt8186_apmixed_probe,
+	.remove = clk_mt8186_apmixed_remove,
+	.driver = {
+		.name = "clk-mt8186-apmixed",
+		.of_match_table = of_match_clk_mt8186_apmixed,
+	},
+};
+builtin_platform_driver(clk_mt8186_apmixed_drv);