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Merge branches 'clk-bulk-optional', 'clk-kirkwood', 'clk-socfpga' and 'clk-docs' into clk-next 

- Add a clk_bulk_get_optional() API (with devm too)
 - Support for Marvell 98DX1135 SoCs

* clk-bulk-optional:
  clk: Document some devm_clk_bulk*() APIs
  clk: Add devm_clk_bulk_get_optional() function
  clk: Add clk_bulk_get_optional() function

* clk-kirkwood:
  clk: kirkwood: Add support for MV98DX1135
  dt-bindings: clock: mvebu: Add compatible string for 98dx1135 core clock

* clk-socfpga:
  clk: socfpga: stratix10: fix divider entry for the emac clocks
  clk: socfpga: stratix10: add additional clocks needed for the NAND IP

* clk-docs:
  clk: Grammar missing "and", Spelling s/statisfied/satisfied/
This commit is contained in:
Stephen Boyd 2019-07-12 11:11:06 -07:00
parent e02cb1f593 179175d389 88aa7af9c1 16e3c572cd 65e2218d10
commit dfe1d3a283
9 changed files with 120 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/devicetree/bindings/clock/mvebu-core-clock.txt
View File

@ -59,6 +59,7 @@ Required properties:
"marvell,dove-core-clock" - for Dove SoC core clocks
"marvell,kirkwood-core-clock" - for Kirkwood SoC (except mv88f6180)
"marvell,mv88f6180-core-clock" - for Kirkwood MV88f6180 SoC
"marvell,mv98dx1135-core-clock" - for Kirkwood 98dx1135 SoC
"marvell,mv88f5181-core-clock" - for Orion MV88F5181 SoC
"marvell,mv88f5182-core-clock" - for Orion MV88F5182 SoC
"marvell,mv88f5281-core-clock" - for Orion MV88F5281 SoC

4
Documentation/driver-model/devres.txt
View File

@ -244,6 +244,10 @@ CLOCK
devm_clk_get()
devm_clk_get_optional()
devm_clk_put()
devm_clk_bulk_get()
devm_clk_bulk_get_all()
devm_clk_bulk_get_optional()
devm_get_clk_from_childl()
devm_clk_hw_register()
devm_of_clk_add_hw_provider()
devm_clk_hw_register_clkdev()

23
drivers/clk/clk-bulk.c
View File

@ -75,8 +75,8 @@ void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
}
EXPORT_SYMBOL_GPL(clk_bulk_put);
int __must_check clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
static int __clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks, bool optional)
{
int ret;
int i;
@ -88,10 +88,14 @@ int __must_check clk_bulk_get(struct device *dev, int num_clks,
clks[i].clk = clk_get(dev, clks[i].id);
if (IS_ERR(clks[i].clk)) {
ret = PTR_ERR(clks[i].clk);
clks[i].clk = NULL;
if (ret == -ENOENT && optional)
continue;
if (ret != -EPROBE_DEFER)
dev_err(dev, "Failed to get clk '%s': %d\n",
clks[i].id, ret);
clks[i].clk = NULL;
goto err;
}
}
@ -103,8 +107,21 @@ err:
return ret;
}
int __must_check clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
{
return __clk_bulk_get(dev, num_clks, clks, false);
}
EXPORT_SYMBOL(clk_bulk_get);
int __must_check clk_bulk_get_optional(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
{
return __clk_bulk_get(dev, num_clks, clks, true);
}
EXPORT_SYMBOL_GPL(clk_bulk_get_optional);
void clk_bulk_put_all(int num_clks, struct clk_bulk_data *clks)
{
if (IS_ERR_OR_NULL(clks))

22
drivers/clk/clk-devres.c
View File

@ -52,8 +52,8 @@ static void devm_clk_bulk_release(struct device *dev, void *res)
clk_bulk_put(devres->num_clks, devres->clks);
}
int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
static int __devm_clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks, bool optional)
{
struct clk_bulk_devres *devres;
int ret;
@ -63,7 +63,10 @@ int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,
if (!devres)
return -ENOMEM;
ret = clk_bulk_get(dev, num_clks, clks);
if (optional)
ret = clk_bulk_get_optional(dev, num_clks, clks);
else
ret = clk_bulk_get(dev, num_clks, clks);
if (!ret) {
devres->clks = clks;
devres->num_clks = num_clks;
@ -74,8 +77,21 @@ int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,
return ret;
}
int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
{
return __devm_clk_bulk_get(dev, num_clks, clks, false);
}
EXPORT_SYMBOL_GPL(devm_clk_bulk_get);
int __must_check devm_clk_bulk_get_optional(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
{
return __devm_clk_bulk_get(dev, num_clks, clks, true);
}
EXPORT_SYMBOL_GPL(devm_clk_bulk_get_optional);
int __must_check devm_clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks)
{

4
drivers/clk/clk.c
View File

@ -2194,7 +2194,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
EXPORT_SYMBOL_GPL(clk_set_rate);
/**
* clk_set_rate_exclusive - specify a new rate get exclusive control
* clk_set_rate_exclusive - specify a new rate and get exclusive control
* @clk: the clk whose rate is being changed
* @rate: the new rate for clk
*
@ -2202,7 +2202,7 @@ EXPORT_SYMBOL_GPL(clk_set_rate);
* within a critical section
*
* This can be used initially to ensure that at least 1 consumer is
* statisfied when several consumers are competing for exclusivity over the
* satisfied when several consumers are competing for exclusivity over the
* same clock provider.
*
* The exclusivity is not applied if setting the rate failed.

17
drivers/clk/mvebu/kirkwood.c
View File

@ -185,6 +185,11 @@ static void __init mv88f6180_get_clk_ratio(
}
}
static u32 __init mv98dx1135_get_tclk_freq(void __iomem *sar)
{
return 166666667;
}
static const struct coreclk_soc_desc kirkwood_coreclks = {
.get_tclk_freq = kirkwood_get_tclk_freq,
.get_cpu_freq = kirkwood_get_cpu_freq,
@ -201,6 +206,14 @@ static const struct coreclk_soc_desc mv88f6180_coreclks = {
.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
};
static const struct coreclk_soc_desc mv98dx1135_coreclks = {
.get_tclk_freq = mv98dx1135_get_tclk_freq,
.get_cpu_freq = kirkwood_get_cpu_freq,
.get_clk_ratio = kirkwood_get_clk_ratio,
.ratios = kirkwood_coreclk_ratios,
.num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
};
/*
* Clock Gating Control
*/
@ -325,6 +338,8 @@ static void __init kirkwood_clk_init(struct device_node *np)
if (of_device_is_compatible(np, "marvell,mv88f6180-core-clock"))
mvebu_coreclk_setup(np, &mv88f6180_coreclks);
else if (of_device_is_compatible(np, "marvell,mv98dx1135-core-clock"))
mvebu_coreclk_setup(np, &mv98dx1135_coreclks);
else
mvebu_coreclk_setup(np, &kirkwood_coreclks);
@ -339,3 +354,5 @@ CLK_OF_DECLARE(kirkwood_clk, "marvell,kirkwood-core-clock",
kirkwood_clk_init);
CLK_OF_DECLARE(mv88f6180_clk, "marvell,mv88f6180-core-clock",
kirkwood_clk_init);
CLK_OF_DECLARE(98dx1135_clk, "marvell,mv98dx1135-core-clock",
kirkwood_clk_init);

10
drivers/clk/socfpga/clk-s10.c
View File

@ -103,9 +103,9 @@ static const struct stratix10_perip_cnt_clock s10_main_perip_cnt_clks[] = {
{ STRATIX10_NOC_CLK, "noc_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux),
0, 0, 0, 0x3C, 1},
{ STRATIX10_EMAC_A_FREE_CLK, "emaca_free_clk", NULL, emaca_free_mux, ARRAY_SIZE(emaca_free_mux),
0, 0, 4, 0xB0, 0},
0, 0, 2, 0xB0, 0},
{ STRATIX10_EMAC_B_FREE_CLK, "emacb_free_clk", NULL, emacb_free_mux, ARRAY_SIZE(emacb_free_mux),
0, 0, 4, 0xB0, 1},
0, 0, 2, 0xB0, 1},
{ STRATIX10_EMAC_PTP_FREE_CLK, "emac_ptp_free_clk", NULL, emac_ptp_free_mux,
ARRAY_SIZE(emac_ptp_free_mux), 0, 0, 4, 0xB0, 2},
{ STRATIX10_GPIO_DB_FREE_CLK, "gpio_db_free_clk", NULL, gpio_db_free_mux,
@ -161,8 +161,12 @@ static const struct stratix10_gate_clock s10_gate_clks[] = {
8, 0, 0, 0, 0, 0, 0},
{ STRATIX10_SPI_M_CLK, "spi_m_clk", "l4_mp_clk", NULL, 1, 0, 0xA4,
9, 0, 0, 0, 0, 0, 0},
{ STRATIX10_NAND_CLK, "nand_clk", "l4_main_clk", NULL, 1, 0, 0xA4,
{ STRATIX10_NAND_X_CLK, "nand_x_clk", "l4_mp_clk", NULL, 1, 0, 0xA4,
10, 0, 0, 0, 0, 0, 0},
{ STRATIX10_NAND_CLK, "nand_clk", "nand_x_clk", NULL, 1, 0, 0xA4,
10, 0, 0, 0, 0, 0, 4},
{ STRATIX10_NAND_ECC_CLK, "nand_ecc_clk", "nand_x_clk", NULL, 1, 0, 0xA4,
10, 0, 0, 0, 0, 0, 4},
};
static int s10_clk_register_c_perip(const struct stratix10_perip_c_clock *clks,

4
include/dt-bindings/clock/stratix10-clock.h
View File

@ -79,6 +79,8 @@
#define STRATIX10_USB_CLK 59
#define STRATIX10_SPI_M_CLK 60
#define STRATIX10_NAND_CLK 61
#define STRATIX10_NUM_CLKS 62
#define STRATIX10_NAND_X_CLK 62
#define STRATIX10_NAND_ECC_CLK 63
#define STRATIX10_NUM_CLKS 64
#endif /* __STRATIX10_CLOCK_H */

47
include/linux/clk.h
View File

@ -332,6 +332,19 @@ int __must_check clk_bulk_get(struct device *dev, int num_clks,
*/
int __must_check clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks);
/**
* clk_bulk_get_optional - lookup and obtain a number of references to clock producer
* @dev: device for clock "consumer"
* @num_clks: the number of clk_bulk_data
* @clks: the clk_bulk_data table of consumer
*
* Behaves the same as clk_bulk_get() except where there is no clock producer.
* In this case, instead of returning -ENOENT, the function returns 0 and
* NULL for a clk for which a clock producer could not be determined.
*/
int __must_check clk_bulk_get_optional(struct device *dev, int num_clks,
struct clk_bulk_data *clks);
/**
* devm_clk_bulk_get - managed get multiple clk consumers
* @dev: device for clock "consumer"
@ -346,6 +359,28 @@ int __must_check clk_bulk_get_all(struct device *dev,
*/
int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks);
/**
* devm_clk_bulk_get_optional - managed get multiple optional consumer clocks
* @dev: device for clock "consumer"
* @clks: pointer to the clk_bulk_data table of consumer
*
* Behaves the same as devm_clk_bulk_get() except where there is no clock
* producer. In this case, instead of returning -ENOENT, the function returns
* NULL for given clk. It is assumed all clocks in clk_bulk_data are optional.
*
* Returns 0 if all clocks specified in clk_bulk_data table are obtained
* successfully or for any clk there was no clk provider available, otherwise
* returns valid IS_ERR() condition containing errno.
* The implementation uses @dev and @clk_bulk_data.id to determine the
* clock consumer, and thereby the clock producer.
* The clock returned is stored in each @clk_bulk_data.clk field.
*
* Drivers must assume that the clock source is not enabled.
*
* clk_bulk_get should not be called from within interrupt context.
*/
int __must_check devm_clk_bulk_get_optional(struct device *dev, int num_clks,
struct clk_bulk_data *clks);
/**
* devm_clk_bulk_get_all - managed get multiple clk consumers
* @dev: device for clock "consumer"
@ -718,6 +753,12 @@ static inline int __must_check clk_bulk_get(struct device *dev, int num_clks,
return 0;
}
static inline int __must_check clk_bulk_get_optional(struct device *dev,
int num_clks, struct clk_bulk_data *clks)
{
return 0;
}
static inline int __must_check clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks)
{
@ -741,6 +782,12 @@ static inline int __must_check devm_clk_bulk_get(struct device *dev, int num_clk
return 0;
}
static inline int __must_check devm_clk_bulk_get_optional(struct device *dev,
int num_clks, struct clk_bulk_data *clks)
{
return 0;
}
static inline int __must_check devm_clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks)
{