summaryrefslogtreecommitdiff
path: root/drivers/clk/mediatek/clk-mt7986-eth.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/mediatek/clk-mt7986-eth.c')
-rw-r--r--drivers/clk/mediatek/clk-mt7986-eth.c132
1 files changed, 132 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt7986-eth.c b/drivers/clk/mediatek/clk-mt7986-eth.c
new file mode 100644
index 000000000000..495d023ccad7
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt7986-eth.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ * Author: Wenzhen Yu <wenzhen.yu@mediatek.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mt7986-clk.h>
+
+static const struct mtk_gate_regs sgmii0_cg_regs = {
+ .set_ofs = 0xe4,
+ .clr_ofs = 0xe4,
+ .sta_ofs = 0xe4,
+};
+
+#define GATE_SGMII0(_id, _name, _parent, _shift) \
+ { \
+ .id = _id, .name = _name, .parent_name = _parent, \
+ .regs = &sgmii0_cg_regs, .shift = _shift, \
+ .ops = &mtk_clk_gate_ops_no_setclr_inv, \
+ }
+
+static const struct mtk_gate sgmii0_clks[] __initconst = {
+ GATE_SGMII0(CLK_SGMII0_TX250M_EN, "sgmii0_tx250m_en", "top_xtal", 2),
+ GATE_SGMII0(CLK_SGMII0_RX250M_EN, "sgmii0_rx250m_en", "top_xtal", 3),
+ GATE_SGMII0(CLK_SGMII0_CDR_REF, "sgmii0_cdr_ref", "top_xtal", 4),
+ GATE_SGMII0(CLK_SGMII0_CDR_FB, "sgmii0_cdr_fb", "top_xtal", 5),
+};
+
+static const struct mtk_gate_regs sgmii1_cg_regs = {
+ .set_ofs = 0xe4,
+ .clr_ofs = 0xe4,
+ .sta_ofs = 0xe4,
+};
+
+#define GATE_SGMII1(_id, _name, _parent, _shift) \
+ { \
+ .id = _id, .name = _name, .parent_name = _parent, \
+ .regs = &sgmii1_cg_regs, .shift = _shift, \
+ .ops = &mtk_clk_gate_ops_no_setclr_inv, \
+ }
+
+static const struct mtk_gate sgmii1_clks[] __initconst = {
+ GATE_SGMII1(CLK_SGMII1_TX250M_EN, "sgmii1_tx250m_en", "top_xtal", 2),
+ GATE_SGMII1(CLK_SGMII1_RX250M_EN, "sgmii1_rx250m_en", "top_xtal", 3),
+ GATE_SGMII1(CLK_SGMII1_CDR_REF, "sgmii1_cdr_ref", "top_xtal", 4),
+ GATE_SGMII1(CLK_SGMII1_CDR_FB, "sgmii1_cdr_fb", "top_xtal", 5),
+};
+
+static const struct mtk_gate_regs eth_cg_regs = {
+ .set_ofs = 0x30,
+ .clr_ofs = 0x30,
+ .sta_ofs = 0x30,
+};
+
+#define GATE_ETH(_id, _name, _parent, _shift) \
+ { \
+ .id = _id, .name = _name, .parent_name = _parent, \
+ .regs = &eth_cg_regs, .shift = _shift, \
+ .ops = &mtk_clk_gate_ops_no_setclr_inv, \
+ }
+
+static const struct mtk_gate eth_clks[] __initconst = {
+ GATE_ETH(CLK_ETH_FE_EN, "eth_fe_en", "netsys_2x_sel", 6),
+ GATE_ETH(CLK_ETH_GP2_EN, "eth_gp2_en", "sgm_325m_sel", 7),
+ GATE_ETH(CLK_ETH_GP1_EN, "eth_gp1_en", "sgm_325m_sel", 8),
+ GATE_ETH(CLK_ETH_WOCPU1_EN, "eth_wocpu1_en", "netsys_mcu_sel", 14),
+ GATE_ETH(CLK_ETH_WOCPU0_EN, "eth_wocpu0_en", "netsys_mcu_sel", 15),
+};
+
+static void __init mtk_sgmiisys_0_init(struct device_node *node)
+{
+ struct clk_onecell_data *clk_data;
+ int r;
+
+ clk_data = mtk_alloc_clk_data(ARRAY_SIZE(sgmii0_clks));
+
+ mtk_clk_register_gates(node, sgmii0_clks, ARRAY_SIZE(sgmii0_clks),
+ clk_data);
+
+ r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+ if (r)
+ pr_err("%s(): could not register clock provider: %d\n",
+ __func__, r);
+}
+CLK_OF_DECLARE(mtk_sgmiisys_0, "mediatek,mt7986-sgmiisys_0",
+ mtk_sgmiisys_0_init);
+
+static void __init mtk_sgmiisys_1_init(struct device_node *node)
+{
+ struct clk_onecell_data *clk_data;
+ int r;
+
+ clk_data = mtk_alloc_clk_data(ARRAY_SIZE(sgmii1_clks));
+
+ mtk_clk_register_gates(node, sgmii1_clks, ARRAY_SIZE(sgmii1_clks),
+ clk_data);
+
+ r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+
+ if (r)
+ pr_err("%s(): could not register clock provider: %d\n",
+ __func__, r);
+}
+CLK_OF_DECLARE(mtk_sgmiisys_1, "mediatek,mt7986-sgmiisys_1",
+ mtk_sgmiisys_1_init);
+
+static void __init mtk_ethsys_init(struct device_node *node)
+{
+ struct clk_onecell_data *clk_data;
+ int r;
+
+ clk_data = mtk_alloc_clk_data(ARRAY_SIZE(eth_clks));
+
+ mtk_clk_register_gates(node, eth_clks, ARRAY_SIZE(eth_clks), clk_data);
+
+ r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+
+ if (r)
+ pr_err("%s(): could not register clock provider: %d\n",
+ __func__, r);
+}
+CLK_OF_DECLARE(mtk_ethsys, "mediatek,mt7986-ethsys_ck", mtk_ethsys_init);