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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/drivers/clk/renesas/renesas-cpg-mssr.h
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/drivers/clk/renesas/renesas-cpg-mssr.h')
-rw-r--r--roms/u-boot/drivers/clk/renesas/renesas-cpg-mssr.h180
1 files changed, 180 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/clk/renesas/renesas-cpg-mssr.h b/roms/u-boot/drivers/clk/renesas/renesas-cpg-mssr.h
new file mode 100644
index 000000000..92421b15e
--- /dev/null
+++ b/roms/u-boot/drivers/clk/renesas/renesas-cpg-mssr.h
@@ -0,0 +1,180 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Renesas RCar Gen3 CPG MSSR driver
+ *
+ * Copyright (C) 2017-2018 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * Based on the following driver from Linux kernel:
+ * r8a7796 Clock Pulse Generator / Module Standby and Software Reset
+ *
+ * Copyright (C) 2016 Glider bvba
+ */
+
+#ifndef __DRIVERS_CLK_RENESAS_CPG_MSSR__
+#define __DRIVERS_CLK_RENESAS_CPG_MSSR__
+
+#include <linux/bitops.h>
+
+enum clk_reg_layout {
+ CLK_REG_LAYOUT_RCAR_GEN2_AND_GEN3 = 0,
+};
+
+struct cpg_mssr_info {
+ const struct cpg_core_clk *core_clk;
+ unsigned int core_clk_size;
+ enum clk_reg_layout reg_layout;
+ const struct mssr_mod_clk *mod_clk;
+ unsigned int mod_clk_size;
+ const struct mstp_stop_table *mstp_table;
+ unsigned int mstp_table_size;
+ const char *reset_node;
+ unsigned int reset_modemr_offset;
+ const char *extalr_node;
+ const char *extal_usb_node;
+ unsigned int mod_clk_base;
+ unsigned int clk_extal_id;
+ unsigned int clk_extalr_id;
+ unsigned int clk_extal_usb_id;
+ unsigned int pll0_div;
+ const void *(*get_pll_config)(const u32 cpg_mode);
+ const u16 *status_regs;
+ const u16 *control_regs;
+ const u16 *reset_regs;
+ const u16 *reset_clear_regs;
+};
+
+/*
+ * Definitions of CPG Core Clocks
+ *
+ * These include:
+ * - Clock outputs exported to DT
+ * - External input clocks
+ * - Internal CPG clocks
+ */
+struct cpg_core_clk {
+ /* Common */
+ const char *name;
+ unsigned int id;
+ unsigned int type;
+ /* Depending on type */
+ unsigned int parent; /* Core Clocks only */
+ unsigned int div;
+ unsigned int mult;
+ unsigned int offset;
+};
+
+enum clk_types {
+ /* Generic */
+ CLK_TYPE_IN, /* External Clock Input */
+ CLK_TYPE_FF, /* Fixed Factor Clock */
+ CLK_TYPE_DIV6P1, /* DIV6 Clock with 1 parent clock */
+ CLK_TYPE_DIV6_RO, /* DIV6 Clock read only with extra divisor */
+ CLK_TYPE_FR, /* Fixed Rate Clock */
+
+ /* Custom definitions start here */
+ CLK_TYPE_CUSTOM,
+};
+
+#define DEF_TYPE(_name, _id, _type...) \
+ { .name = _name, .id = _id, .type = _type }
+#define DEF_BASE(_name, _id, _type, _parent...) \
+ DEF_TYPE(_name, _id, _type, .parent = _parent)
+
+#define DEF_INPUT(_name, _id) \
+ DEF_TYPE(_name, _id, CLK_TYPE_IN)
+#define DEF_FIXED(_name, _id, _parent, _div, _mult) \
+ DEF_BASE(_name, _id, CLK_TYPE_FF, _parent, .div = _div, .mult = _mult)
+#define DEF_DIV6P1(_name, _id, _parent, _offset) \
+ DEF_BASE(_name, _id, CLK_TYPE_DIV6P1, _parent, .offset = _offset)
+#define DEF_DIV6_RO(_name, _id, _parent, _offset, _div) \
+ DEF_BASE(_name, _id, CLK_TYPE_DIV6_RO, _parent, .offset = _offset, .div = _div, .mult = 1)
+#define DEF_RATE(_name, _id, _rate) \
+ DEF_TYPE(_name, _id, CLK_TYPE_FR, .mult = _rate)
+
+/*
+ * Definitions of Module Clocks
+ */
+struct mssr_mod_clk {
+ const char *name;
+ unsigned int id;
+ unsigned int parent; /* Add MOD_CLK_BASE for Module Clocks */
+};
+
+/* Convert from sparse base-100 to packed index space */
+#define MOD_CLK_PACK(x) ((x) - ((x) / 100) * (100 - 32))
+
+#define MOD_CLK_ID(x) (MOD_CLK_BASE + MOD_CLK_PACK(x))
+
+#define DEF_MOD(_name, _mod, _parent...) \
+ { .name = _name, .id = MOD_CLK_ID(_mod), .parent = _parent }
+
+struct mstp_stop_table {
+ u32 sdis;
+ u32 sen;
+ u32 rdis;
+ u32 ren;
+};
+
+#define TSTR0 0x04
+#define TSTR0_STR0 BIT(0)
+
+bool renesas_clk_is_mod(struct clk *clk);
+int renesas_clk_get_mod(struct clk *clk, struct cpg_mssr_info *info,
+ const struct mssr_mod_clk **mssr);
+int renesas_clk_get_core(struct clk *clk, struct cpg_mssr_info *info,
+ const struct cpg_core_clk **core);
+int renesas_clk_get_parent(struct clk *clk, struct cpg_mssr_info *info,
+ struct clk *parent);
+int renesas_clk_endisable(struct clk *clk, void __iomem *base,
+ struct cpg_mssr_info *info, bool enable);
+int renesas_clk_remove(void __iomem *base, struct cpg_mssr_info *info);
+
+/*
+ * Module Standby and Software Reset register offets.
+ *
+ * If the registers exist, these are valid for SH-Mobile, R-Mobile,
+ * R-Car Gen2, R-Car Gen3, and RZ/G1.
+ * These are NOT valid for R-Car Gen1 and RZ/A1!
+ */
+
+/*
+ * Module Stop Status Register offsets
+ */
+
+static const u16 mstpsr[] = {
+ 0x030, 0x038, 0x040, 0x048, 0x04C, 0x03C, 0x1C0, 0x1C4,
+ 0x9A0, 0x9A4, 0x9A8, 0x9AC,
+};
+
+/*
+ * System Module Stop Control Register offsets
+ */
+
+static const u16 smstpcr[] = {
+ 0x130, 0x134, 0x138, 0x13C, 0x140, 0x144, 0x148, 0x14C,
+ 0x990, 0x994, 0x998, 0x99C,
+};
+
+/*
+ * Software Reset Register offsets
+ */
+
+static const u16 srcr[] = {
+ 0x0A0, 0x0A8, 0x0B0, 0x0B8, 0x0BC, 0x0C4, 0x1C8, 0x1CC,
+ 0x920, 0x924, 0x928, 0x92C,
+};
+
+/* Realtime Module Stop Control Register offsets */
+#define RMSTPCR(i) ((i) < 8 ? smstpcr[i] - 0x20 : smstpcr[i] - 0x10)
+
+/* Modem Module Stop Control Register offsets (r8a73a4) */
+#define MMSTPCR(i) (smstpcr[i] + 0x20)
+
+/* Software Reset Clearing Register offsets */
+
+static const u16 srstclr[] = {
+ 0x940, 0x944, 0x948, 0x94C, 0x950, 0x954, 0x958, 0x95C,
+ 0x960, 0x964, 0x968, 0x96C,
+};
+
+#endif /* __DRIVERS_CLK_RENESAS_CPG_MSSR__ */