[PATCH v6 0/3] rockchip: add GATE_LINK

[PATCH v6 0/3] rockchip: add GATE_LINK

[Elaine Zhang]

Recent Rockchip SoCs have a new hardware block called Native Interface
Unit (NIU), which gates clocks to devices behind them. These effectively
need two parent clocks.
Use GATE_LINK to handle this.

change in v6:
Droped the [PATCH v5 3/4]

change in v5:
[PATCH v5 1/4]: No change
[PATCH v5 2/4]: Fix the:
Oct 20 18:25:04 rk3588-evb1 kernel: clk: Disabling unused clocks
Oct 20 18:25:04 rk3588-evb1 kernel: ------------[ cut here ]------------
Oct 20 18:25:04 rk3588-evb1 kernel: hclk_rkvenc0 already disabled
Oct 20 18:25:04 rk3588-evb1 kernel: WARNING: CPU: 4 PID: 1 at drivers/clk/clk.c:1090 clk_core_disable+0x1b0/0x1e0
Oct 20 18:25:04 rk3588-evb1 kernel: Modules linked in:
Oct 20 18:25:04 rk3588-evb1 kernel: CPU: 4 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc6-00044-g31c3dbd16ca1 #1120
Oct 20 18:25:04 rk3588-evb1 kernel: Hardware name: Rockchip RK3588 EVB1 V10 Board (DT)
Oct 20 18:25:04 rk3588-evb1 kernel: pstate: 604000c9 (nZCv daIF +PAN-UAO -TCO -DIT -SSBS BTYPE=--)
Oct 20 18:25:04 rk3588-evb1 kernel: pc : clk_core_disable+0x1b0/0x1e0
Oct 20 18:25:04 rk3588-evb1 kernel: lr : clk_core_disable+0x1b0/0x1e0
Oct 20 18:25:04 rk3588-evb1 kernel: sp : ffff8000846fbbf0
Oct 20 18:25:04 rk3588-evb1 kernel: x29: ffff8000846fbbf0 x28:ffff8000833a0008 x27: ffff8000830e0130
Oct 20 18:25:04 rk3588-evb1 kernel: x26: ffff800082ffcff0 x25:ffff8000830b9be8 x24: ffff800083236100
Oct 20 18:25:04 rk3588-evb1 kernel: x23: 000000000000104a x22:0000000000000000 x21: ffff800084669000
Oct 20 18:25:04 rk3588-evb1 kernel: x20: ffff00040087ca00 x19:ffff00040087ca00 x18: ffffffffffffffff
Oct 20 18:25:04 rk3588-evb1 kernel: x17: ffff80008435d050 x16:ffff80008435cfe0 x15: 0720072007200720
Oct 20 18:25:04 rk3588-evb1 kernel: x14: 0720072007200720 x13:0720072007200720 x12: 0720072007200720
Oct 20 18:25:04 rk3588-evb1 kernel: x11: 0720072007200720 x10:ffff800084079890 x9 : ffff800080128a78
Oct 20 18:25:04 rk3588-evb1 kernel: x8 : 00000000ffffefff x7 :ffff800084079890 x6 : 80000000fffff000
Oct 20 18:25:04 rk3588-evb1 kernel: x5 : 0000000000000000 x4 :0000000000000000 x3 : 0000000000000000
Oct 20 18:25:04 rk3588-evb1 kernel: x2 : 0000000000000000 x1 :0000000000000000 x0 : ffff000400a08000
Oct 20 18:25:04 rk3588-evb1 kernel: Call trace:
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_core_disable+0x1b0/0x1e0
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable+0x38/0x60
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_gate_link_disable+0x2c/0x48
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable_unused_subtree+0x104/0x270
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable_unused_subtree+0x34/0x270
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable_unused_subtree+0x34/0x270
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable_unused_subtree+0x34/0x270
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable_unused_subtree+0x34/0x270
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable_unused_subtree+0x34/0x270
Oct 20 18:25:04 rk3588-evb1 kernel:  clk_disable_unused+0x54/0x148
Oct 20 18:25:04 rk3588-evb1 kernel:  do_one_initcall+0x48/0x2a8
Oct 20 18:25:04 rk3588-evb1 kernel:  kernel_init_freeable+0x1ec/0x3d8
Oct 20 18:25:04 rk3588-evb1 kernel:  kernel_init+0x2c/0x1f8
Oct 20 18:25:04 rk3588-evb1 kernel:  ret_from_fork+0x10/0x20
Oct 20 18:25:04 rk3588-evb1 kernel: ---[ end trace 0000000000000000 ]---
Oct 20 18:25:04 rk3588-evb1 kernel: ------------[ cut here ]------------

[PATCH v5 3/4]: Rollback to pacth v3.
[PATCH v5 4/4]: Fix the:
Oct 20 19:22:37 rk3588-evb1 kernel: pclk_vo0grf clk_register field
Oct 20 19:22:37 rk3588-evb1 kernel: rockchip_clk_register_branches:failed to register clock pclk_vo0grf: -17
Oct 20 19:22:37 rk3588-evb1 kernel: pclk_vo1grf clk_register field
Oct 20 19:22:37 rk3588-evb1 kernel: rockchip_clk_register_branches:failed to register clock pclk_vo1grf: -17

change in v4:
[PATCH v4 1/4]: No change
[PATCH v4 2/4]: No change
[PATCH v4 3/4]: dropping CLK_NR_CLKS,reword commit message
[PATCH v4 4/4]: No change

change in V3:
[PATCH v3 1/4]: new, export clk_gate_endisable for PATCH2.
[PATCH v3 2/4]: reuse clk_gate_endisable and clk_gate_is_enabled.
                add prepare and unprepare ops.
[PATCH v3 3/4]: No change
[PATCH v3 4/4]: reword commit message

change in V2:
[PATCH v2 1/3]: fix reported warnings
[PATCH v2 2/3]: Bindings submit independent patches
[PATCH v2 3/3]: fix reported warnings

Elaine Zhang (3):
  clk: gate: export clk_gate_endisable
  clk: rockchip: add support for gate link
  clk: rockchip: rk3588: Adjust the GATE_LINK parameter

 drivers/clk/clk-gate.c               |   3 +-
 drivers/clk/rockchip/Makefile        |   1 +
 drivers/clk/rockchip/clk-gate-link.c | 120 +++++++++++++++++++++++++++
 drivers/clk/rockchip/clk-rk3588.c    | 114 +++++++++++++------------
 drivers/clk/rockchip/clk.c           |   7 ++
 drivers/clk/rockchip/clk.h           |  22 +++++
 include/linux/clk-provider.h         |   1 +
 7 files changed, 212 insertions(+), 56 deletions(-)
 create mode 100644 drivers/clk/rockchip/clk-gate-link.c

-- 
2.17.1

[PATCH v6 1/3] clk: gate: export clk_gate_endisable

[Elaine Zhang]

make clk_gate_endisable not static, export API for other use.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
---
 drivers/clk/clk-gate.c       | 3 ++-
 include/linux/clk-provider.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 68e585a02fd9..531bb84a5b3e 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -53,7 +53,7 @@ static inline void clk_gate_writel(struct clk_gate *gate, u32 val)
  *
  * So, result is always: enable xor set2dis.
  */
-static void clk_gate_endisable(struct clk_hw *hw, int enable)
+void clk_gate_endisable(struct clk_hw *hw, int enable)
 {
 	struct clk_gate *gate = to_clk_gate(hw);
 	int set = gate->flags & CLK_GATE_SET_TO_DISABLE ? 1 : 0;
@@ -87,6 +87,7 @@ static void clk_gate_endisable(struct clk_hw *hw, int enable)
 	else
 		__release(gate->lock);
 }
+EXPORT_SYMBOL_GPL(clk_gate_endisable);
 
 static int clk_gate_enable(struct clk_hw *hw)
 {
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index ace3a4ce2fc9..76b050d73feb 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -630,6 +630,7 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
 void clk_unregister_gate(struct clk *clk);
 void clk_hw_unregister_gate(struct clk_hw *hw);
 int clk_gate_is_enabled(struct clk_hw *hw);
+void clk_gate_endisable(struct clk_hw *hw, int enable);
 
 struct clk_div_table {
 	unsigned int	val;
-- 
2.17.1

[PATCH v6 2/3] clk: rockchip: add support for gate link

[Elaine Zhang]

Recent Rockchip SoCs have a new hardware block called Native Interface
Unit (NIU), which gates clocks to devices behind them. These effectively
need two parent clocks.
Use GATE_LINK to handle this.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
---
 drivers/clk/rockchip/Makefile        |   1 +
 drivers/clk/rockchip/clk-gate-link.c | 120 +++++++++++++++++++++++++++
 drivers/clk/rockchip/clk.c           |   7 ++
 drivers/clk/rockchip/clk.h           |  22 +++++
 4 files changed, 150 insertions(+)
 create mode 100644 drivers/clk/rockchip/clk-gate-link.c

diff --git a/drivers/clk/rockchip/Makefile b/drivers/clk/rockchip/Makefile
index 36894f6a7022..87cc39d54f72 100644
--- a/drivers/clk/rockchip/Makefile
+++ b/drivers/clk/rockchip/Makefile
@@ -13,6 +13,7 @@ clk-rockchip-y += clk-inverter.o
 clk-rockchip-y += clk-mmc-phase.o
 clk-rockchip-y += clk-muxgrf.o
 clk-rockchip-y += clk-ddr.o
+clk-rockchip-y += clk-gate-link.o
 clk-rockchip-$(CONFIG_RESET_CONTROLLER) += softrst.o
 
 obj-$(CONFIG_CLK_PX30)          += clk-px30.o
diff --git a/drivers/clk/rockchip/clk-gate-link.c b/drivers/clk/rockchip/clk-gate-link.c
new file mode 100644
index 000000000000..d7e91007217b
--- /dev/null
+++ b/drivers/clk/rockchip/clk-gate-link.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023 Fuzhou Rockchip Electronics Co., Ltd
+ */
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include "clk.h"
+
+/**
+ * struct clk_gate_link - gating link clock
+ *
+ * @gate: handle clk gate
+ * @link: links clk
+ */
+struct clk_gate_link {
+	struct clk_gate gate;
+	struct clk	*link;
+};
+
+#define to_clk_gate_link(_gate) container_of(_gate, struct clk_gate_link, gate)
+
+static int clk_gate_link_enable(struct clk_hw *hw)
+{
+	struct clk_gate_link *gate = to_clk_gate_link(to_clk_gate(hw));
+
+	clk_gate_endisable(hw, 1);
+	clk_enable(gate->link);
+
+	return 0;
+}
+
+static void clk_gate_link_disable(struct clk_hw *hw)
+{
+	struct clk_gate_link *gate = to_clk_gate_link(to_clk_gate(hw));
+
+	clk_gate_endisable(hw, 0);
+	clk_disable(gate->link);
+}
+
+static int clk_gate_link_is_enabled(struct clk_hw *hw)
+{
+	return clk_gate_is_enabled(hw);
+}
+
+static int clk_gate_link_prepare(struct clk_hw *hw)
+{
+	struct clk_gate_link *gate = to_clk_gate_link(to_clk_gate(hw));
+
+	return clk_prepare(gate->link);
+}
+
+static void clk_gate_link_unprepare(struct clk_hw *hw)
+{
+	struct clk_gate_link *gate = to_clk_gate_link(to_clk_gate(hw));
+
+	clk_unprepare(gate->link);
+}
+
+const struct clk_ops clk_gate_link_ops = {
+	.prepare = clk_gate_link_prepare,
+	.unprepare = clk_gate_link_unprepare,
+	.enable = clk_gate_link_enable,
+	.disable = clk_gate_link_disable,
+	.is_enabled = clk_gate_link_is_enabled,
+};
+
+struct clk *rockchip_clk_register_gate_link(struct rockchip_clk_provider *ctx,
+					    const char *name, const char *parent_name,
+					    unsigned int link_id, u8 flags,
+					    void __iomem *gate_offset, u8 gate_shift,
+					    u8 gate_flags, spinlock_t *lock)
+{
+	struct clk_gate_link *gate_link;
+	struct clk_init_data init = {};
+	struct clk **clks;
+	struct clk *clk_link;
+
+	if (gate_flags & CLK_GATE_HIWORD_MASK) {
+		if (gate_shift > 15) {
+			pr_err("gate bit exceeds LOWORD field\n");
+			return ERR_PTR(-ENOMEM);
+		}
+	}
+
+	/* allocate the gate */
+	gate_link = kzalloc(sizeof(*gate_link), GFP_KERNEL);
+	if (!gate_link)
+		return ERR_PTR(-ENOMEM);
+
+	clks = ctx->clk_data.clks;
+	gate_link->link = clks[link_id];
+
+	init.name = name;
+	init.ops = &clk_gate_link_ops;
+	init.flags = flags | CLK_IGNORE_UNUSED;
+	init.parent_names = parent_name ? &parent_name : NULL;
+	init.num_parents = 1;
+
+	/* struct clk_gate assignments */
+	gate_link->gate.reg = gate_offset;
+	gate_link->gate.bit_idx = gate_shift;
+	gate_link->gate.flags = gate_flags;
+	gate_link->gate.lock = lock;
+	gate_link->gate.hw.init = &init;
+
+	clk_link = clk_register(NULL, &gate_link->gate.hw);
+	if (IS_ERR(clk_link)) {
+		kfree(gate_link);
+		pr_err("%s clk_register field\n", name);
+		return ERR_CAST(clk_link);
+	}
+
+	return clk_link;
+}
+EXPORT_SYMBOL_GPL(rockchip_clk_register_gate_link);
diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
index 4059d9365ae6..d981ef6c5487 100644
--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -509,6 +509,13 @@ void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,
 				ctx->reg_base + list->gate_offset,
 				list->gate_shift, list->gate_flags, &ctx->lock);
 			break;
+
+		case branch_gate_link:
+			clk = rockchip_clk_register_gate_link(ctx, list->name,
+				list->parent_names[0], list->link_id, flags,
+				ctx->reg_base + list->gate_offset,
+				list->gate_shift, list->gate_flags, &ctx->lock);
+			break;
 		case branch_composite:
 			clk = rockchip_clk_register_branch(list->name,
 				list->parent_names, list->num_parents,
diff --git a/drivers/clk/rockchip/clk.h b/drivers/clk/rockchip/clk.h
index 758ebaf2236b..b49e3cede33a 100644
--- a/drivers/clk/rockchip/clk.h
+++ b/drivers/clk/rockchip/clk.h
@@ -517,6 +517,7 @@ enum rockchip_clk_branch_type {
 	branch_divider,
 	branch_fraction_divider,
 	branch_gate,
+	branch_gate_link,
 	branch_mmc,
 	branch_inverter,
 	branch_factor,
@@ -529,6 +530,7 @@ struct rockchip_clk_branch {
 	enum rockchip_clk_branch_type	branch_type;
 	const char			*name;
 	const char			*const *parent_names;
+	unsigned int			link_id;
 	u8				num_parents;
 	unsigned long			flags;
 	int				muxdiv_offset;
@@ -842,6 +844,20 @@ struct rockchip_clk_branch {
 		.gate_flags	= gf,				\
 	}
 
+#define GATE_LINK(_id, cname, pname, _linkid, f, o, b, gf) \
+	{							\
+		.id		= _id,				\
+		.branch_type	= branch_gate_link,		\
+		.name		= cname,			\
+		.parent_names	= (const char *[]){ pname },	\
+		.num_parents	= 1,				\
+		.link_id	= _linkid,			\
+		.flags		= f,				\
+		.gate_offset	= o,				\
+		.gate_shift	= b,				\
+		.gate_flags	= gf,				\
+	}
+
 #define MMC(_id, cname, pname, offset, shift)			\
 	{							\
 		.id		= _id,				\
@@ -1002,6 +1018,12 @@ struct clk *rockchip_clk_register_halfdiv(const char *name,
 					  unsigned long flags,
 					  spinlock_t *lock);
 
+struct clk *rockchip_clk_register_gate_link(struct rockchip_clk_provider *ctx,
+					    const char *name, const char *parent_name,
+					    unsigned int link_id, u8 flags,
+					    void __iomem *gate_offset, u8 gate_shift,
+					    u8 gate_flags, spinlock_t *lock);
+
 #ifdef CONFIG_RESET_CONTROLLER
 void rockchip_register_softrst_lut(struct device_node *np,
 				   const int *lookup_table,
-- 
2.17.1

[PATCH v6 3/3] clk: rockchip: rk3588: Adjust the GATE_LINK parameter

[Elaine Zhang]

Export PCLK_VO1GRF clk id.
Using Id instead of name, if use name needs to use __clk_lookup().
But __clk_lookup() is not exported and is not friendly for GKI.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
---
 drivers/clk/rockchip/clk-rk3588.c | 114 ++++++++++++++++--------------
 1 file changed, 59 insertions(+), 55 deletions(-)

diff --git a/drivers/clk/rockchip/clk-rk3588.c b/drivers/clk/rockchip/clk-rk3588.c
index 6994165e0395..ff71c48f07ab 100644
--- a/drivers/clk/rockchip/clk-rk3588.c
+++ b/drivers/clk/rockchip/clk-rk3588.c
@@ -12,28 +12,6 @@
 #include <dt-bindings/clock/rockchip,rk3588-cru.h>
 #include "clk.h"
 
-/*
- * Recent Rockchip SoCs have a new hardware block called Native Interface
- * Unit (NIU), which gates clocks to devices behind them. These effectively
- * need two parent clocks.
- *
- * Downstream enables the linked clock via runtime PM whenever the gate is
- * enabled. This implementation uses separate clock nodes for each of the
- * linked gate clocks, which leaks parts of the clock tree into DT.
- *
- * The GATE_LINK macro instead takes the second parent via 'linkname', but
- * ignores the information. Once the clock framework is ready to handle it, the
- * information should be passed on here. But since these clocks are required to
- * access multiple relevant IP blocks, such as PCIe or USB, we mark all linked
- * clocks critical until a better solution is available. This will waste some
- * power, but avoids leaking implementation details into DT or hanging the
- * system.
- */
-#define GATE_LINK(_id, cname, pname, linkname, f, o, b, gf) \
-	GATE(_id, cname, pname, f, o, b, gf)
-#define RK3588_LINKED_CLK		CLK_IS_CRITICAL
-
-
 #define RK3588_GRF_SOC_STATUS0		0x600
 #define RK3588_PHYREF_ALT_GATE		0xc38
 
@@ -1456,7 +1434,7 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 	COMPOSITE_NODIV(HCLK_NVM_ROOT,  "hclk_nvm_root", mux_200m_100m_50m_24m_p, 0,
 			RK3588_CLKSEL_CON(77), 0, 2, MFLAGS,
 			RK3588_CLKGATE_CON(31), 0, GFLAGS),
-	COMPOSITE(ACLK_NVM_ROOT, "aclk_nvm_root", gpll_cpll_p, RK3588_LINKED_CLK,
+	COMPOSITE(ACLK_NVM_ROOT, "aclk_nvm_root", gpll_cpll_p, 0,
 			RK3588_CLKSEL_CON(77), 7, 1, MFLAGS, 2, 5, DFLAGS,
 			RK3588_CLKGATE_CON(31), 1, GFLAGS),
 	GATE(ACLK_EMMC, "aclk_emmc", "aclk_nvm_root", 0,
@@ -1685,13 +1663,13 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 			RK3588_CLKGATE_CON(42), 9, GFLAGS),
 
 	/* vdpu */
-	COMPOSITE(ACLK_VDPU_ROOT, "aclk_vdpu_root", gpll_cpll_aupll_p, RK3588_LINKED_CLK,
+	COMPOSITE(ACLK_VDPU_ROOT, "aclk_vdpu_root", gpll_cpll_aupll_p, 0,
 			RK3588_CLKSEL_CON(98), 5, 2, MFLAGS, 0, 5, DFLAGS,
 			RK3588_CLKGATE_CON(44), 0, GFLAGS),
 	COMPOSITE_NODIV(ACLK_VDPU_LOW_ROOT, "aclk_vdpu_low_root", mux_400m_200m_100m_24m_p, 0,
 			RK3588_CLKSEL_CON(98), 7, 2, MFLAGS,
 			RK3588_CLKGATE_CON(44), 1, GFLAGS),
-	COMPOSITE_NODIV(HCLK_VDPU_ROOT, "hclk_vdpu_root", mux_200m_100m_50m_24m_p, RK3588_LINKED_CLK,
+	COMPOSITE_NODIV(HCLK_VDPU_ROOT, "hclk_vdpu_root", mux_200m_100m_50m_24m_p, 0,
 			RK3588_CLKSEL_CON(98), 9, 2, MFLAGS,
 			RK3588_CLKGATE_CON(44), 2, GFLAGS),
 	COMPOSITE(ACLK_JPEG_DECODER_ROOT, "aclk_jpeg_decoder_root", gpll_cpll_aupll_spll_p, 0,
@@ -1742,9 +1720,9 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 	COMPOSITE(ACLK_RKVENC0_ROOT, "aclk_rkvenc0_root", gpll_cpll_npll_p, 0,
 			RK3588_CLKSEL_CON(102), 7, 2, MFLAGS, 2, 5, DFLAGS,
 			RK3588_CLKGATE_CON(47), 1, GFLAGS),
-	GATE(HCLK_RKVENC0, "hclk_rkvenc0", "hclk_rkvenc0_root", RK3588_LINKED_CLK,
+	GATE(HCLK_RKVENC0, "hclk_rkvenc0", "hclk_rkvenc0_root", 0,
 			RK3588_CLKGATE_CON(47), 4, GFLAGS),
-	GATE(ACLK_RKVENC0, "aclk_rkvenc0", "aclk_rkvenc0_root", RK3588_LINKED_CLK,
+	GATE(ACLK_RKVENC0, "aclk_rkvenc0", "aclk_rkvenc0_root", 0,
 			RK3588_CLKGATE_CON(47), 5, GFLAGS),
 	COMPOSITE(CLK_RKVENC0_CORE, "clk_rkvenc0_core", gpll_cpll_aupll_npll_p, 0,
 			RK3588_CLKSEL_CON(102), 14, 2, MFLAGS, 9, 5, DFLAGS,
@@ -1754,10 +1732,10 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 			RK3588_CLKGATE_CON(48), 6, GFLAGS),
 
 	/* vi */
-	COMPOSITE(ACLK_VI_ROOT, "aclk_vi_root", gpll_cpll_npll_aupll_spll_p, RK3588_LINKED_CLK,
+	COMPOSITE(ACLK_VI_ROOT, "aclk_vi_root", gpll_cpll_npll_aupll_spll_p, 0,
 			RK3588_CLKSEL_CON(106), 5, 3, MFLAGS, 0, 5, DFLAGS,
 			RK3588_CLKGATE_CON(49), 0, GFLAGS),
-	COMPOSITE_NODIV(HCLK_VI_ROOT, "hclk_vi_root", mux_200m_100m_50m_24m_p, RK3588_LINKED_CLK,
+	COMPOSITE_NODIV(HCLK_VI_ROOT, "hclk_vi_root", mux_200m_100m_50m_24m_p, 0,
 			RK3588_CLKSEL_CON(106), 8, 2, MFLAGS,
 			RK3588_CLKGATE_CON(49), 1, GFLAGS),
 	COMPOSITE_NODIV(PCLK_VI_ROOT, "pclk_vi_root", mux_100m_50m_24m_p, 0,
@@ -1851,8 +1829,6 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 			RK3588_CLKGATE_CON(56), 0, GFLAGS),
 	GATE(PCLK_TRNG0, "pclk_trng0", "pclk_vo0_root", 0,
 			RK3588_CLKGATE_CON(56), 1, GFLAGS),
-	GATE(PCLK_VO0GRF, "pclk_vo0grf", "pclk_vo0_root", CLK_IGNORE_UNUSED,
-			RK3588_CLKGATE_CON(55), 10, GFLAGS),
 	COMPOSITE(CLK_I2S4_8CH_TX_SRC, "clk_i2s4_8ch_tx_src", gpll_aupll_p, 0,
 			RK3588_CLKSEL_CON(118), 5, 1, MFLAGS, 0, 5, DFLAGS,
 			RK3588_CLKGATE_CON(56), 11, GFLAGS),
@@ -1929,10 +1905,10 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 	COMPOSITE(ACLK_VOP_ROOT, "aclk_vop_root", gpll_cpll_dmyaupll_npll_spll_p, 0,
 			RK3588_CLKSEL_CON(110), 5, 3, MFLAGS, 0, 5, DFLAGS,
 			RK3588_CLKGATE_CON(52), 0, GFLAGS),
-	COMPOSITE_NODIV(ACLK_VOP_LOW_ROOT, "aclk_vop_low_root", mux_400m_200m_100m_24m_p, RK3588_LINKED_CLK,
+	COMPOSITE_NODIV(ACLK_VOP_LOW_ROOT, "aclk_vop_low_root", mux_400m_200m_100m_24m_p, 0,
 			RK3588_CLKSEL_CON(110), 8, 2, MFLAGS,
 			RK3588_CLKGATE_CON(52), 1, GFLAGS),
-	COMPOSITE_NODIV(HCLK_VOP_ROOT, "hclk_vop_root", mux_200m_100m_50m_24m_p, RK3588_LINKED_CLK,
+	COMPOSITE_NODIV(HCLK_VOP_ROOT, "hclk_vop_root", mux_200m_100m_50m_24m_p, 0,
 			RK3588_CLKSEL_CON(110), 10, 2, MFLAGS,
 			RK3588_CLKGATE_CON(52), 2, GFLAGS),
 	COMPOSITE_NODIV(PCLK_VOP_ROOT, "pclk_vop_root", mux_100m_50m_24m_p, 0,
@@ -1998,8 +1974,6 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 			RK3588_CLKGATE_CON(60), 9, GFLAGS),
 	GATE(PCLK_TRNG1, "pclk_trng1", "pclk_vo1_root", 0,
 			RK3588_CLKGATE_CON(60), 10, GFLAGS),
-	GATE(0, "pclk_vo1grf", "pclk_vo1_root", CLK_IGNORE_UNUSED,
-			RK3588_CLKGATE_CON(59), 12, GFLAGS),
 	GATE(PCLK_S_EDP0, "pclk_s_edp0", "pclk_vo1_s_root", 0,
 			RK3588_CLKGATE_CON(59), 14, GFLAGS),
 	GATE(PCLK_S_EDP1, "pclk_s_edp1", "pclk_vo1_s_root", 0,
@@ -2433,26 +2407,56 @@ static struct rockchip_clk_branch rk3588_clk_branches[] __initdata = {
 	GATE(ACLK_AV1, "aclk_av1", "aclk_av1_pre", 0,
 			RK3588_CLKGATE_CON(68), 2, GFLAGS),
 
-	GATE_LINK(ACLK_ISP1_PRE, "aclk_isp1_pre", "aclk_isp1_root", "aclk_vi_root", 0, RK3588_CLKGATE_CON(26), 6, GFLAGS),
-	GATE_LINK(HCLK_ISP1_PRE, "hclk_isp1_pre", "hclk_isp1_root", "hclk_vi_root", 0, RK3588_CLKGATE_CON(26), 8, GFLAGS),
-	GATE_LINK(HCLK_NVM, "hclk_nvm", "hclk_nvm_root", "aclk_nvm_root", RK3588_LINKED_CLK, RK3588_CLKGATE_CON(31), 2, GFLAGS),
-	GATE_LINK(ACLK_USB, "aclk_usb", "aclk_usb_root", "aclk_vo1usb_top_root", 0, RK3588_CLKGATE_CON(42), 2, GFLAGS),
-	GATE_LINK(HCLK_USB, "hclk_usb", "hclk_usb_root", "hclk_vo1usb_top_root", 0, RK3588_CLKGATE_CON(42), 3, GFLAGS),
-	GATE_LINK(ACLK_JPEG_DECODER_PRE, "aclk_jpeg_decoder_pre", "aclk_jpeg_decoder_root", "aclk_vdpu_root", 0, RK3588_CLKGATE_CON(44), 7, GFLAGS),
-	GATE_LINK(ACLK_VDPU_LOW_PRE, "aclk_vdpu_low_pre", "aclk_vdpu_low_root", "aclk_vdpu_root", 0, RK3588_CLKGATE_CON(44), 5, GFLAGS),
-	GATE_LINK(ACLK_RKVENC1_PRE, "aclk_rkvenc1_pre", "aclk_rkvenc1_root", "aclk_rkvenc0", 0, RK3588_CLKGATE_CON(48), 3, GFLAGS),
-	GATE_LINK(HCLK_RKVENC1_PRE, "hclk_rkvenc1_pre", "hclk_rkvenc1_root", "hclk_rkvenc0", 0, RK3588_CLKGATE_CON(48), 2, GFLAGS),
-	GATE_LINK(HCLK_RKVDEC0_PRE, "hclk_rkvdec0_pre", "hclk_rkvdec0_root", "hclk_vdpu_root", 0, RK3588_CLKGATE_CON(40), 5, GFLAGS),
-	GATE_LINK(ACLK_RKVDEC0_PRE, "aclk_rkvdec0_pre", "aclk_rkvdec0_root", "aclk_vdpu_root", 0, RK3588_CLKGATE_CON(40), 6, GFLAGS),
-	GATE_LINK(HCLK_RKVDEC1_PRE, "hclk_rkvdec1_pre", "hclk_rkvdec1_root", "hclk_vdpu_root", 0, RK3588_CLKGATE_CON(41), 4, GFLAGS),
-	GATE_LINK(ACLK_RKVDEC1_PRE, "aclk_rkvdec1_pre", "aclk_rkvdec1_root", "aclk_vdpu_root", 0, RK3588_CLKGATE_CON(41), 5, GFLAGS),
-	GATE_LINK(ACLK_HDCP0_PRE, "aclk_hdcp0_pre", "aclk_vo0_root", "aclk_vop_low_root", 0, RK3588_CLKGATE_CON(55), 9, GFLAGS),
-	GATE_LINK(HCLK_VO0, "hclk_vo0", "hclk_vo0_root", "hclk_vop_root", 0, RK3588_CLKGATE_CON(55), 5, GFLAGS),
-	GATE_LINK(ACLK_HDCP1_PRE, "aclk_hdcp1_pre", "aclk_hdcp1_root", "aclk_vo1usb_top_root", 0, RK3588_CLKGATE_CON(59), 6, GFLAGS),
-	GATE_LINK(HCLK_VO1, "hclk_vo1", "hclk_vo1_root", "hclk_vo1usb_top_root", 0, RK3588_CLKGATE_CON(59), 9, GFLAGS),
-	GATE_LINK(ACLK_AV1_PRE, "aclk_av1_pre", "aclk_av1_root", "aclk_vdpu_root", 0, RK3588_CLKGATE_CON(68), 1, GFLAGS),
-	GATE_LINK(PCLK_AV1_PRE, "pclk_av1_pre", "pclk_av1_root", "hclk_vdpu_root", 0, RK3588_CLKGATE_CON(68), 4, GFLAGS),
-	GATE_LINK(HCLK_SDIO_PRE, "hclk_sdio_pre", "hclk_sdio_root", "hclk_nvm", 0, RK3588_CLKGATE_CON(75), 1, GFLAGS),
+	/*
+	 * Recent Rockchip SoCs have a new hardware block called Native Interface
+	 * Unit (NIU), which gates clocks to devices behind them. These effectively
+	 * need two parent clocks.
+	 */
+	GATE_LINK(ACLK_ISP1_PRE, "aclk_isp1_pre", "aclk_isp1_root", ACLK_VI_ROOT, 0,
+			RK3588_CLKGATE_CON(26), 6, GFLAGS),
+	GATE_LINK(HCLK_ISP1_PRE, "hclk_isp1_pre", "hclk_isp1_root", HCLK_VI_ROOT, 0,
+			RK3588_CLKGATE_CON(26), 8, GFLAGS),
+	GATE_LINK(HCLK_NVM, "hclk_nvm", "hclk_nvm_root", ACLK_NVM_ROOT, 0,
+			RK3588_CLKGATE_CON(31), 2, GFLAGS),
+	GATE_LINK(ACLK_USB, "aclk_usb", "aclk_usb_root", ACLK_VO1USB_TOP_ROOT, 0,
+			RK3588_CLKGATE_CON(42), 2, GFLAGS),
+	GATE_LINK(HCLK_USB, "hclk_usb", "hclk_usb_root", HCLK_VO1USB_TOP_ROOT, 0,
+			RK3588_CLKGATE_CON(42), 3, GFLAGS),
+	GATE_LINK(ACLK_JPEG_DECODER_PRE, "aclk_jpeg_decoder_pre", "aclk_jpeg_decoder_root",
+			ACLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(44), 7, GFLAGS),
+	GATE_LINK(ACLK_VDPU_LOW_PRE, "aclk_vdpu_low_pre", "aclk_vdpu_low_root", ACLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(44), 5, GFLAGS),
+	GATE_LINK(ACLK_RKVENC1_PRE, "aclk_rkvenc1_pre", "aclk_rkvenc1_root", ACLK_RKVENC0, 0,
+			RK3588_CLKGATE_CON(48), 3, GFLAGS),
+	GATE_LINK(HCLK_RKVENC1_PRE, "hclk_rkvenc1_pre", "hclk_rkvenc1_root", HCLK_RKVENC0, 0,
+			RK3588_CLKGATE_CON(48), 2, GFLAGS),
+	GATE_LINK(HCLK_RKVDEC0_PRE, "hclk_rkvdec0_pre", "hclk_rkvdec0_root", HCLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(40), 5, GFLAGS),
+	GATE_LINK(ACLK_RKVDEC0_PRE, "aclk_rkvdec0_pre", "aclk_rkvdec0_root", ACLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(40), 6, GFLAGS),
+	GATE_LINK(HCLK_RKVDEC1_PRE, "hclk_rkvdec1_pre", "hclk_rkvdec1_root", HCLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(41), 4, GFLAGS),
+	GATE_LINK(ACLK_RKVDEC1_PRE, "aclk_rkvdec1_pre", "aclk_rkvdec1_root", ACLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(41), 5, GFLAGS),
+	GATE_LINK(ACLK_HDCP0_PRE, "aclk_hdcp0_pre", "aclk_vo0_root", ACLK_VOP_LOW_ROOT, 0,
+			RK3588_CLKGATE_CON(55), 9, GFLAGS),
+	GATE_LINK(HCLK_VO0, "hclk_vo0", "hclk_vo0_root", HCLK_VOP_ROOT, 0,
+			RK3588_CLKGATE_CON(55), 5, GFLAGS),
+	GATE_LINK(ACLK_HDCP1_PRE, "aclk_hdcp1_pre", "aclk_hdcp1_root", ACLK_VO1USB_TOP_ROOT, 0,
+			RK3588_CLKGATE_CON(59), 6, GFLAGS),
+	GATE_LINK(HCLK_VO1, "hclk_vo1", "hclk_vo1_root", HCLK_VO1USB_TOP_ROOT, 0,
+			RK3588_CLKGATE_CON(59), 9, GFLAGS),
+	GATE_LINK(ACLK_AV1_PRE, "aclk_av1_pre", "aclk_av1_root", ACLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(68), 1, GFLAGS),
+	GATE_LINK(PCLK_AV1_PRE, "pclk_av1_pre", "pclk_av1_root", HCLK_VDPU_ROOT, 0,
+			RK3588_CLKGATE_CON(68), 4, GFLAGS),
+	GATE_LINK(HCLK_SDIO_PRE, "hclk_sdio_pre", "hclk_sdio_root", HCLK_NVM, 0,
+			RK3588_CLKGATE_CON(75), 1, GFLAGS),
+	GATE_LINK(PCLK_VO0GRF, "pclk_vo0grf", "pclk_vo0_root", HCLK_VO0, 0,
+			RK3588_CLKGATE_CON(55), 10, GFLAGS),
+	GATE_LINK(0, "pclk_vo1grf", "pclk_vo1_root", HCLK_VO1, CLK_IS_CRITICAL,
+			RK3588_CLKGATE_CON(59), 12, GFLAGS),
 };
 
 static void __init rk3588_clk_init(struct device_node *np)
-- 
2.17.1

Re: [PATCH v6 3/3] clk: rockchip: rk3588: Adjust the GATE_LINK parameter

[Krzysztof Kozlowski]

On 10/11/2023 03:03, Elaine Zhang wrote:
> Export PCLK_VO1GRF clk id.

If the clock is exported, how do you get its reference?

Best regards,
Krzysztof

Re: [PATCH v6 3/3] clk: rockchip: rk3588: Adjust the GATE_LINK parameter

[zhangqing]

在 2023/11/10 15:46, Krzysztof Kozlowski 写道:
> On 10/11/2023 03:03, Elaine Zhang wrote:
>> Export PCLK_VO1GRF clk id.
> If the clock is exported, how do you get its reference?
The export of the clock has been abandoned, and mark the pclk_vo1grf as 
CLK_IS_CRITICAL.
Fix The commit message later.
>
> Best regards,
> Krzysztof
>
-- 
张晴
瑞芯微电子股份有限公司
Rockchip Electronics Co.,Ltd
地址：福建省福州市铜盘路软件大道89号软件园A区21号楼
Add:No.21 Building, A District, No.89 Software Boulevard Fuzhou, Fujian 350003, P.R.China
Tel:+86-0591-83991906-8601
邮编：350003
E-mail:elaine.zhang@rock-chips.com
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