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-rw-r--r--drivers/clk/tegra/clk-periph-gate.c22
-rw-r--r--drivers/clk/tegra/clk-periph.c40
-rw-r--r--drivers/clk/tegra/clk-tegra114.c3
-rw-r--r--drivers/clk/tegra/clk-tegra124.c2
-rw-r--r--drivers/clk/tegra/clk-tegra20.c9
-rw-r--r--drivers/clk/tegra/clk-tegra30.c10
-rw-r--r--drivers/clk/tegra/clk.c50
-rw-r--r--drivers/clk/tegra/clk.h3
8 files changed, 57 insertions, 82 deletions
diff --git a/drivers/clk/tegra/clk-periph-gate.c b/drivers/clk/tegra/clk-periph-gate.c
index f38f33e3c65d..507015314827 100644
--- a/drivers/clk/tegra/clk-periph-gate.c
+++ b/drivers/clk/tegra/clk-periph-gate.c
@@ -36,8 +36,6 @@ static DEFINE_SPINLOCK(periph_ref_lock);
#define read_rst(gate) \
readl_relaxed(gate->clk_base + (gate->regs->rst_reg))
-#define write_rst_set(val, gate) \
- writel_relaxed(val, gate->clk_base + (gate->regs->rst_set_reg))
#define write_rst_clr(val, gate) \
writel_relaxed(val, gate->clk_base + (gate->regs->rst_clr_reg))
@@ -123,26 +121,6 @@ static void clk_periph_disable(struct clk_hw *hw)
spin_unlock_irqrestore(&periph_ref_lock, flags);
}
-void tegra_periph_reset(struct tegra_clk_periph_gate *gate, bool assert)
-{
- if (gate->flags & TEGRA_PERIPH_NO_RESET)
- return;
-
- if (assert) {
- /*
- * If peripheral is in the APB bus then read the APB bus to
- * flush the write operation in apb bus. This will avoid the
- * peripheral access after disabling clock
- */
- if (gate->flags & TEGRA_PERIPH_ON_APB)
- tegra_read_chipid();
-
- write_rst_set(periph_clk_to_bit(gate), gate);
- } else {
- write_rst_clr(periph_clk_to_bit(gate), gate);
- }
-}
-
const struct clk_ops tegra_clk_periph_gate_ops = {
.is_enabled = clk_periph_is_enabled,
.enable = clk_periph_enable,
diff --git a/drivers/clk/tegra/clk-periph.c b/drivers/clk/tegra/clk-periph.c
index d62b396863c1..c534043c0481 100644
--- a/drivers/clk/tegra/clk-periph.c
+++ b/drivers/clk/tegra/clk-periph.c
@@ -111,46 +111,6 @@ static void clk_periph_disable(struct clk_hw *hw)
gate_ops->disable(gate_hw);
}
-void tegra_periph_reset_deassert(struct clk *c)
-{
- struct clk_hw *hw = __clk_get_hw(c);
- struct tegra_clk_periph *periph = to_clk_periph(hw);
- struct tegra_clk_periph_gate *gate;
-
- if (periph->magic != TEGRA_CLK_PERIPH_MAGIC) {
- gate = to_clk_periph_gate(hw);
- if (gate->magic != TEGRA_CLK_PERIPH_GATE_MAGIC) {
- WARN_ON(1);
- return;
- }
- } else {
- gate = &periph->gate;
- }
-
- tegra_periph_reset(gate, 0);
-}
-EXPORT_SYMBOL(tegra_periph_reset_deassert);
-
-void tegra_periph_reset_assert(struct clk *c)
-{
- struct clk_hw *hw = __clk_get_hw(c);
- struct tegra_clk_periph *periph = to_clk_periph(hw);
- struct tegra_clk_periph_gate *gate;
-
- if (periph->magic != TEGRA_CLK_PERIPH_MAGIC) {
- gate = to_clk_periph_gate(hw);
- if (gate->magic != TEGRA_CLK_PERIPH_GATE_MAGIC) {
- WARN_ON(1);
- return;
- }
- } else {
- gate = &periph->gate;
- }
-
- tegra_periph_reset(gate, 1);
-}
-EXPORT_SYMBOL(tegra_periph_reset_assert);
-
const struct clk_ops tegra_clk_periph_ops = {
.get_parent = clk_periph_get_parent,
.set_parent = clk_periph_set_parent,
diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c
index 29b912582e3d..90d9d25f2228 100644
--- a/drivers/clk/tegra/clk-tegra114.c
+++ b/drivers/clk/tegra/clk-tegra114.c
@@ -1460,7 +1460,8 @@ static void __init tegra114_clock_init(struct device_node *np)
return;
}
- clks = tegra_clk_init(TEGRA114_CLK_CLK_MAX, TEGRA114_CLK_PERIPH_BANKS);
+ clks = tegra_clk_init(clk_base, TEGRA114_CLK_CLK_MAX,
+ TEGRA114_CLK_PERIPH_BANKS);
if (!clks)
return;
diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index 0ef4485e9b0a..aff86b5bc745 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -1398,7 +1398,7 @@ static void __init tegra124_clock_init(struct device_node *np)
return;
}
- clks = tegra_clk_init(TEGRA124_CLK_CLK_MAX, 6);
+ clks = tegra_clk_init(clk_base, TEGRA124_CLK_CLK_MAX, 6);
if (!clks)
return;
diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c
index b3b7204acfe7..dbace152b2fa 100644
--- a/drivers/clk/tegra/clk-tegra20.c
+++ b/drivers/clk/tegra/clk-tegra20.c
@@ -468,7 +468,6 @@ static struct tegra_devclk devclks[] __initdata = {
{ .con_id = "isp", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_ISP },
{ .con_id = "pex", .dt_id = TEGRA20_CLK_PEX },
{ .con_id = "afi", .dt_id = TEGRA20_CLK_AFI },
- { .con_id = "pcie_xclk", .dt_id = TEGRA20_CLK_PCIE_XCLK },
{ .con_id = "cdev1", .dt_id = TEGRA20_CLK_CDEV1 },
{ .con_id = "cdev2", .dt_id = TEGRA20_CLK_CDEV2 },
{ .con_id = "clk_32k", .dt_id = TEGRA20_CLK_CLK_32K },
@@ -834,11 +833,6 @@ static void __init tegra20_periph_clk_init(void)
periph_clk_enb_refcnt);
clks[TEGRA20_CLK_PEX] = clk;
- /* pcie_xclk */
- clk = tegra_clk_register_periph_gate("pcie_xclk", "clk_m", 0, clk_base,
- 0, 74, periph_clk_enb_refcnt);
- clks[TEGRA20_CLK_PCIE_XCLK] = clk;
-
/* cdev1 */
clk = clk_register_fixed_rate(NULL, "cdev1_fixed", NULL, CLK_IS_ROOT,
26000000);
@@ -1109,7 +1103,8 @@ static void __init tegra20_clock_init(struct device_node *np)
BUG();
}
- clks = tegra_clk_init(TEGRA20_CLK_CLK_MAX, TEGRA20_CLK_PERIPH_BANKS);
+ clks = tegra_clk_init(clk_base, TEGRA20_CLK_CLK_MAX,
+ TEGRA20_CLK_PERIPH_BANKS);
if (!clks)
return;
diff --git a/drivers/clk/tegra/clk-tegra30.c b/drivers/clk/tegra/clk-tegra30.c
index dcb6843b3a89..8b10c38b6e3c 100644
--- a/drivers/clk/tegra/clk-tegra30.c
+++ b/drivers/clk/tegra/clk-tegra30.c
@@ -649,7 +649,6 @@ static struct tegra_devclk devclks[] __initdata = {
{ .con_id = "isp", .dev_id = "tegra_camera", .dt_id = TEGRA30_CLK_ISP },
{ .con_id = "pcie", .dev_id = "tegra-pcie", .dt_id = TEGRA30_CLK_PCIE },
{ .con_id = "afi", .dev_id = "tegra-pcie", .dt_id = TEGRA30_CLK_AFI },
- { .con_id = "pciex", .dev_id = "tegra-pcie", .dt_id = TEGRA30_CLK_PCIEX },
{ .con_id = "fuse", .dt_id = TEGRA30_CLK_FUSE },
{ .con_id = "fuse_burn", .dev_id = "fuse-tegra", .dt_id = TEGRA30_CLK_FUSE_BURN },
{ .con_id = "apbif", .dev_id = "tegra30-ahub", .dt_id = TEGRA30_CLK_APBIF },
@@ -1150,11 +1149,6 @@ static void __init tegra30_periph_clk_init(void)
periph_clk_enb_refcnt);
clks[TEGRA30_CLK_AFI] = clk;
- /* pciex */
- clk = tegra_clk_register_periph_gate("pciex", "pll_e", 0, clk_base, 0,
- 74, periph_clk_enb_refcnt);
- clks[TEGRA30_CLK_PCIEX] = clk;
-
/* emc */
clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
ARRAY_SIZE(mux_pllmcp_clkm),
@@ -1395,7 +1389,6 @@ static struct tegra_clk_duplicate tegra_clk_duplicates[] = {
TEGRA_CLK_DUPLICATE(TEGRA30_CLK_BSEA, "nvavp", "bsea"),
TEGRA_CLK_DUPLICATE(TEGRA30_CLK_CML1, "tegra_sata_cml", NULL),
TEGRA_CLK_DUPLICATE(TEGRA30_CLK_CML0, "tegra_pcie", "cml"),
- TEGRA_CLK_DUPLICATE(TEGRA30_CLK_PCIEX, "tegra_pcie", "pciex"),
TEGRA_CLK_DUPLICATE(TEGRA30_CLK_VCP, "nvavp", "vcp"),
TEGRA_CLK_DUPLICATE(TEGRA30_CLK_CLK_MAX, NULL, NULL), /* MUST be the last entry */
};
@@ -1427,7 +1420,8 @@ static void __init tegra30_clock_init(struct device_node *np)
BUG();
}
- clks = tegra_clk_init(TEGRA30_CLK_CLK_MAX, TEGRA30_CLK_PERIPH_BANKS);
+ clks = tegra_clk_init(clk_base, TEGRA30_CLK_CLK_MAX,
+ TEGRA30_CLK_PERIPH_BANKS);
if (!clks)
return;
diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c
index a12a5f5107ec..c0a7d7723510 100644
--- a/drivers/clk/tegra/clk.c
+++ b/drivers/clk/tegra/clk.c
@@ -18,6 +18,8 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/clk/tegra.h>
+#include <linux/reset-controller.h>
+#include <linux/tegra-soc.h>
#include "clk.h"
@@ -121,6 +123,35 @@ static struct tegra_clk_periph_regs periph_regs[] = {
},
};
+static void __iomem *clk_base;
+
+static int tegra_clk_rst_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ /*
+ * If peripheral is on the APB bus then we must read the APB bus to
+ * flush the write operation in apb bus. This will avoid peripheral
+ * access after disabling clock. Since the reset driver has no
+ * knowledge of which reset IDs represent which devices, simply do
+ * this all the time.
+ */
+ tegra_read_chipid();
+
+ writel_relaxed(BIT(id % 32),
+ clk_base + periph_regs[id / 32].rst_set_reg);
+
+ return 0;
+}
+
+static int tegra_clk_rst_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ writel_relaxed(BIT(id % 32),
+ clk_base + periph_regs[id / 32].rst_clr_reg);
+
+ return 0;
+}
+
struct tegra_clk_periph_regs *get_reg_bank(int clkid)
{
int reg_bank = clkid / 32;
@@ -133,8 +164,10 @@ struct tegra_clk_periph_regs *get_reg_bank(int clkid)
}
}
-struct clk ** __init tegra_clk_init(int num, int banks)
+struct clk ** __init tegra_clk_init(void __iomem *regs, int num, int banks)
{
+ clk_base = regs;
+
if (WARN_ON(banks > ARRAY_SIZE(periph_regs)))
return NULL;
@@ -203,6 +236,17 @@ void __init tegra_init_from_table(struct tegra_clk_init_table *tbl,
}
}
+static struct reset_control_ops rst_ops = {
+ .assert = tegra_clk_rst_assert,
+ .deassert = tegra_clk_rst_deassert,
+};
+
+static struct reset_controller_dev rst_ctlr = {
+ .ops = &rst_ops,
+ .owner = THIS_MODULE,
+ .of_reset_n_cells = 1,
+};
+
void __init tegra_add_of_provider(struct device_node *np)
{
int i;
@@ -220,6 +264,10 @@ void __init tegra_add_of_provider(struct device_node *np)
clk_data.clks = clks;
clk_data.clk_num = clk_num;
of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+
+ rst_ctlr.of_node = np;
+ rst_ctlr.nr_resets = clk_num * 32;
+ reset_controller_register(&rst_ctlr);
}
void __init tegra_register_devclks(struct tegra_devclk *dev_clks, int num)
diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index 40fb011233c0..16ec8d6bb87f 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -393,7 +393,6 @@ struct tegra_clk_periph_gate {
#define TEGRA_PERIPH_NO_DIV BIT(4)
#define TEGRA_PERIPH_NO_GATE BIT(5)
-void tegra_periph_reset(struct tegra_clk_periph_gate *gate, bool assert);
extern const struct clk_ops tegra_clk_periph_gate_ops;
struct clk *tegra_clk_register_periph_gate(const char *name,
const char *parent_name, u8 gate_flags, void __iomem *clk_base,
@@ -597,7 +596,7 @@ void tegra_init_dup_clks(struct tegra_clk_duplicate *dup_list,
struct clk *clks[], int clk_max);
struct tegra_clk_periph_regs *get_reg_bank(int clkid);
-struct clk **tegra_clk_init(int num, int periph_banks);
+struct clk **tegra_clk_init(void __iomem *clk_base, int num, int periph_banks);
struct clk **tegra_lookup_dt_id(int clk_id, struct tegra_clk *tegra_clk);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 07:14:09 +0000