// SPDX-License-Identifier: GPL-2.0
/*
* Zynq UltraScale + MPSoC clock controller
*
* Copyright ( C ) 2016 - 2019 Xilinx
*
* Based on drivers / clk / zynq / clkc . c
*/
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/string.h>
#include "clk-zynqmp.h"
#define MAX_PARENT 100
#define MAX_NODES 6
#define MAX_NAME_LEN 50
/* Flags for parents */
#define PARENT_CLK_SELF 0
#define PARENT_CLK_NODE1 1
#define PARENT_CLK_NODE2 2
#define PARENT_CLK_NODE3 3
#define PARENT_CLK_NODE4 4
#define PARENT_CLK_EXTERNAL 5
#define END_OF_CLK_NAME "END_OF_CLK"
#define END_OF_TOPOLOGY_NODE 1
#define END_OF_PARENTS 1
#define RESERVED_CLK_NAME ""
#define CLK_GET_NAME_RESP_LEN 16
#define CLK_GET_TOPOLOGY_RESP_WORDS 3
#define CLK_GET_PARENTS_RESP_WORDS 3
#define CLK_GET_ATTR_RESP_WORDS 1
enum clk_type {
CLK_TYPE_OUTPUT,
CLK_TYPE_EXTERNAL,
};
/**
* struct clock_parent - Clock parent
* @ name : Parent name
* @ id : Parent clock ID
* @ flag : Parent flags
*/
struct clock_parent {
char name[MAX_NAME_LEN];
int id;
u32 flag;
};
/**
* struct zynqmp_clock - Clock
* @ clk_name : Clock name
* @ valid : Validity flag of clock
* @ type : Clock type ( Output / External )
* @ node : Clock topology nodes
* @ num_nodes : Number of nodes present in topology
* @ parent : Parent of clock
* @ num_parents : Number of parents of clock
* @ clk_id : Clock id
*/
struct zynqmp_clock {
char clk_name[MAX_NAME_LEN];
u32 valid;
enum clk_type type;
struct clock_topology node[MAX_NODES];
u32 num_nodes;
struct clock_parent parent[MAX_PARENT];
u32 num_parents;
u32 clk_id;
};
struct name_resp {
char name[CLK_GET_NAME_RESP_LEN];
};
struct topology_resp {
#define CLK_TOPOLOGY_TYPE GENMASK(3 , 0 )
#define CLK_TOPOLOGY_CUSTOM_TYPE_FLAGS GENMASK(7 , 4 )
#define CLK_TOPOLOGY_FLAGS GENMASK(23 , 8 )
#define CLK_TOPOLOGY_TYPE_FLAGS GENMASK(31 , 24 )
u32 topology[CLK_GET_TOPOLOGY_RESP_WORDS];
};
struct parents_resp {
#define NA_PARENT 0 xFFFFFFFF
#define DUMMY_PARENT 0 xFFFFFFFE
#define CLK_PARENTS_ID GENMASK(15 , 0 )
#define CLK_PARENTS_FLAGS GENMASK(31 , 16 )
u32 parents[CLK_GET_PARENTS_RESP_WORDS];
};
struct attr_resp {
#define CLK_ATTR_VALID BIT(0 )
#define CLK_ATTR_TYPE BIT(2 )
#define CLK_ATTR_NODE_INDEX GENMASK(13 , 0 )
#define CLK_ATTR_NODE_TYPE GENMASK(19 , 14 )
#define CLK_ATTR_NODE_SUBCLASS GENMASK(25 , 20 )
#define CLK_ATTR_NODE_CLASS GENMASK(31 , 26 )
u32 attr[CLK_GET_ATTR_RESP_WORDS];
};
static const char clk_type_postfix[][10 ] = {
[TYPE_INVALID] = "" ,
[TYPE_MUX] = "_mux" ,
[TYPE_GATE] = "" ,
[TYPE_DIV1] = "_div1" ,
[TYPE_DIV2] = "_div2" ,
[TYPE_FIXEDFACTOR] = "_ff" ,
[TYPE_PLL] = ""
};
static struct clk_hw *(* const clk_topology[]) (const char *name, u32 clk_id,
const char * const *parents,
u8 num_parents,
const struct clock_topology *nodes)
= {
[TYPE_INVALID] = NULL,
[TYPE_MUX] = zynqmp_clk_register_mux,
[TYPE_PLL] = zynqmp_clk_register_pll,
[TYPE_FIXEDFACTOR] = zynqmp_clk_register_fixed_factor,
[TYPE_DIV1] = zynqmp_clk_register_divider,
[TYPE_DIV2] = zynqmp_clk_register_divider,
[TYPE_GATE] = zynqmp_clk_register_gate
};
static struct zynqmp_clock *clock;
static struct clk_hw_onecell_data *zynqmp_data;
static unsigned int clock_max_idx;
/**
* zynqmp_is_valid_clock ( ) - Check whether clock is valid or not
* @ clk_id : Clock index
*
* Return : 1 if clock is valid , 0 if clock is invalid else error code
*/
static inline int zynqmp_is_valid_clock(u32 clk_id)
{
if (clk_id >= clock_max_idx)
return -ENODEV;
return clock[clk_id].valid;
}
/**
* zynqmp_get_clock_name ( ) - Get name of clock from Clock index
* @ clk_id : Clock index
* @ clk_name : Name of clock
*
* Return : 0 on success else error code
*/
static int zynqmp_get_clock_name(u32 clk_id, char *clk_name)
{
int ret;
ret = zynqmp_is_valid_clock(clk_id);
if (ret == 1 ) {
strscpy(clk_name, clock[clk_id].clk_name, MAX_NAME_LEN);
return 0 ;
}
return ret == 0 ? -EINVAL : ret;
}
/**
* zynqmp_get_clock_type ( ) - Get type of clock
* @ clk_id : Clock index
* @ type : Clock type : CLK_TYPE_OUTPUT or CLK_TYPE_EXTERNAL
*
* Return : 0 on success else error code
*/
static int zynqmp_get_clock_type(u32 clk_id, u32 *type)
{
int ret;
ret = zynqmp_is_valid_clock(clk_id);
if (ret == 1 ) {
*type = clock[clk_id].type;
return 0 ;
}
return ret == 0 ? -EINVAL : ret;
}
/**
* zynqmp_pm_clock_get_num_clocks ( ) - Get number of clocks in system
* @ nclocks : Number of clocks in system / board .
*
* Call firmware API to get number of clocks .
*
* Return : 0 on success else error code .
*/
static int zynqmp_pm_clock_get_num_clocks(u32 *nclocks)
{
struct zynqmp_pm_query_data qdata = {0 };
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
qdata.qid = PM_QID_CLOCK_GET_NUM_CLOCKS;
ret = zynqmp_pm_query_data(qdata, ret_payload);
*nclocks = ret_payload[1 ];
return ret;
}
/**
* zynqmp_pm_clock_get_name ( ) - Get the name of clock for given id
* @ clock_id : ID of the clock to be queried
* @ response : Name of the clock with the given id
*
* This function is used to get name of clock specified by given
* clock ID .
*
* Return : 0 on success else error + reason
*/
static int zynqmp_pm_clock_get_name(u32 clock_id,
struct name_resp *response)
{
struct zynqmp_pm_query_data qdata = {0 };
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
qdata.qid = PM_QID_CLOCK_GET_NAME;
qdata.arg1 = clock_id;
ret = zynqmp_pm_query_data(qdata, ret_payload);
if (ret)
return ret;
memcpy(response, ret_payload, sizeof (*response));
return 0 ;
}
/**
* zynqmp_pm_clock_get_topology ( ) - Get the topology of clock for given id
* @ clock_id : ID of the clock to be queried
* @ index : Node index of clock topology
* @ response : Buffer used for the topology response
*
* This function is used to get topology information for the clock
* specified by given clock ID .
*
* This API will return 3 node of topology with a single response . To get
* other nodes , master should call same API in loop with new
* index till error is returned . E . g First call should have
* index 0 which will return nodes 0 , 1 and 2 . Next call , index
* should be 3 which will return nodes 3 , 4 and 5 and so on .
*
* Return : 0 on success else error + reason
*/
static int zynqmp_pm_clock_get_topology(u32 clock_id, u32 index,
struct topology_resp *response)
{
struct zynqmp_pm_query_data qdata = {0 };
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
qdata.qid = PM_QID_CLOCK_GET_TOPOLOGY;
qdata.arg1 = clock_id;
qdata.arg2 = index;
ret = zynqmp_pm_query_data(qdata, ret_payload);
memcpy(response, &ret_payload[1 ], sizeof (*response));
return ret;
}
unsigned long zynqmp_clk_map_common_ccf_flags(const u32 zynqmp_flag)
{
unsigned long ccf_flag = 0 ;
if (zynqmp_flag & ZYNQMP_CLK_SET_RATE_GATE)
ccf_flag |= CLK_SET_RATE_GATE;
if (zynqmp_flag & ZYNQMP_CLK_SET_PARENT_GATE)
ccf_flag |= CLK_SET_PARENT_GATE;
if (zynqmp_flag & ZYNQMP_CLK_SET_RATE_PARENT)
ccf_flag |= CLK_SET_RATE_PARENT;
if (zynqmp_flag & ZYNQMP_CLK_IGNORE_UNUSED)
ccf_flag |= CLK_IGNORE_UNUSED;
if (zynqmp_flag & ZYNQMP_CLK_SET_RATE_NO_REPARENT)
ccf_flag |= CLK_SET_RATE_NO_REPARENT;
if (zynqmp_flag & ZYNQMP_CLK_IS_CRITICAL)
ccf_flag |= CLK_IS_CRITICAL;
return ccf_flag;
}
/**
* zynqmp_clk_register_fixed_factor ( ) - Register fixed factor with the
* clock framework
* @ name : Name of this clock
* @ clk_id : Clock ID
* @ parents : Name of this clock ' s parents
* @ num_parents : Number of parents
* @ nodes : Clock topology node
*
* Return : clock hardware to the registered clock
*/
struct clk_hw *zynqmp_clk_register_fixed_factor(const char *name, u32 clk_id,
const char * const *parents,
u8 num_parents,
const struct clock_topology *nodes)
{
u32 mult, div;
struct clk_hw *hw;
struct zynqmp_pm_query_data qdata = {0 };
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
unsigned long flag;
qdata.qid = PM_QID_CLOCK_GET_FIXEDFACTOR_PARAMS;
qdata.arg1 = clk_id;
ret = zynqmp_pm_query_data(qdata, ret_payload);
if (ret)
return ERR_PTR(ret);
mult = ret_payload[1 ];
div = ret_payload[2 ];
flag = zynqmp_clk_map_common_ccf_flags(nodes->flag);
hw = clk_hw_register_fixed_factor(NULL, name,
parents[0 ],
flag, mult,
div);
return hw;
}
/**
* zynqmp_pm_clock_get_parents ( ) - Get the first 3 parents of clock for given id
* @ clock_id : Clock ID
* @ index : Parent index
* @ response : Parents of the given clock
*
* This function is used to get 3 parents for the clock specified by
* given clock ID .
*
* This API will return 3 parents with a single response . To get
* other parents , master should call same API in loop with new
* parent index till error is returned . E . g First call should have
* index 0 which will return parents 0 , 1 and 2 . Next call , index
* should be 3 which will return parent 3 , 4 and 5 and so on .
*
* Return : 0 on success else error + reason
*/
static int zynqmp_pm_clock_get_parents(u32 clock_id, u32 index,
struct parents_resp *response)
{
struct zynqmp_pm_query_data qdata = {0 };
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
qdata.qid = PM_QID_CLOCK_GET_PARENTS;
qdata.arg1 = clock_id;
qdata.arg2 = index;
ret = zynqmp_pm_query_data(qdata, ret_payload);
memcpy(response, &ret_payload[1 ], sizeof (*response));
return ret;
}
/**
* zynqmp_pm_clock_get_attributes ( ) - Get the attributes of clock for given id
* @ clock_id : Clock ID
* @ response : Clock attributes response
*
* This function is used to get clock ' s attributes ( e . g . valid , clock type , etc ) .
*
* Return : 0 on success else error + reason
*/
static int zynqmp_pm_clock_get_attributes(u32 clock_id,
struct attr_resp *response)
{
struct zynqmp_pm_query_data qdata = {0 };
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
qdata.qid = PM_QID_CLOCK_GET_ATTRIBUTES;
qdata.arg1 = clock_id;
ret = zynqmp_pm_query_data(qdata, ret_payload);
memcpy(response, &ret_payload[1 ], sizeof (*response));
return ret;
}
/**
* _ _ zynqmp_clock_get_topology ( ) - Get topology data of clock from firmware
* response data
* @ topology : Clock topology
* @ response : Clock topology data received from firmware
* @ nnodes : Number of nodes
*
* Return : 0 on success else error + reason
*/
static int __zynqmp_clock_get_topology(struct clock_topology *topology,
struct topology_resp *response,
u32 *nnodes)
{
int i;
u32 type;
for (i = 0 ; i < ARRAY_SIZE(response->topology); i++) {
type = FIELD_GET(CLK_TOPOLOGY_TYPE, response->topology[i]);
if (type == TYPE_INVALID)
return END_OF_TOPOLOGY_NODE;
topology[*nnodes].type = type;
topology[*nnodes].flag = FIELD_GET(CLK_TOPOLOGY_FLAGS,
response->topology[i]);
topology[*nnodes].type_flag =
FIELD_GET(CLK_TOPOLOGY_TYPE_FLAGS,
response->topology[i]);
topology[*nnodes].custom_type_flag =
FIELD_GET(CLK_TOPOLOGY_CUSTOM_TYPE_FLAGS,
response->topology[i]);
(*nnodes)++;
}
return 0 ;
}
/**
* zynqmp_clock_get_topology ( ) - Get topology of clock from firmware using
* PM_API
* @ clk_id : Clock index
* @ topology : Clock topology
* @ num_nodes : Number of nodes
*
* Return : 0 on success else error + reason
*/
static int zynqmp_clock_get_topology(u32 clk_id,
struct clock_topology *topology,
u32 *num_nodes)
{
int j, ret;
struct topology_resp response = { };
*num_nodes = 0 ;
for (j = 0 ; j <= MAX_NODES; j += ARRAY_SIZE(response.topology)) {
ret = zynqmp_pm_clock_get_topology(clock[clk_id].clk_id, j,
&response);
if (ret)
return ret;
ret = __zynqmp_clock_get_topology(topology, &response,
num_nodes);
if (ret == END_OF_TOPOLOGY_NODE)
return 0 ;
}
return 0 ;
}
/**
* _ _ zynqmp_clock_get_parents ( ) - Get parents info of clock from firmware
* response data
* @ parents : Clock parents
* @ response : Clock parents data received from firmware
* @ nparent : Number of parent
*
* Return : 0 on success else error + reason
*/
static int __zynqmp_clock_get_parents(struct clock_parent *parents,
struct parents_resp *response,
u32 *nparent)
{
int i;
struct clock_parent *parent;
for (i = 0 ; i < ARRAY_SIZE(response->parents); i++) {
if (response->parents[i] == NA_PARENT)
return END_OF_PARENTS;
parent = &parents[i];
parent->id = FIELD_GET(CLK_PARENTS_ID, response->parents[i]);
if (response->parents[i] == DUMMY_PARENT) {
strcpy(parent->name, "dummy_name" );
parent->flag = 0 ;
} else {
parent->flag = FIELD_GET(CLK_PARENTS_FLAGS,
response->parents[i]);
if (zynqmp_get_clock_name(parent->id, parent->name))
continue ;
}
*nparent += 1 ;
}
return 0 ;
}
/**
* zynqmp_clock_get_parents ( ) - Get parents info from firmware using PM_API
* @ clk_id : Clock index
* @ parents : Clock parents
* @ num_parents : Total number of parents
*
* Return : 0 on success else error + reason
*/
static int zynqmp_clock_get_parents(u32 clk_id, struct clock_parent *parents,
u32 *num_parents)
{
int j = 0 , ret;
struct parents_resp response = { };
*num_parents = 0 ;
do {
/* Get parents from firmware */
ret = zynqmp_pm_clock_get_parents(clock[clk_id].clk_id, j,
&response);
if (ret)
return ret;
ret = __zynqmp_clock_get_parents(&parents[j], &response,
num_parents);
if (ret == END_OF_PARENTS)
return 0 ;
j += ARRAY_SIZE(response.parents);
} while (*num_parents <= MAX_PARENT);
return 0 ;
}
/**
* zynqmp_get_parent_list ( ) - Create list of parents name
* @ np : Device node
* @ clk_id : Clock index
* @ parent_list : List of parent ' s name
* @ num_parents : Total number of parents
*
* Return : 0 on success else error + reason
*/
static int zynqmp_get_parent_list(struct device_node *np, u32 clk_id,
const char **parent_list, u32 *num_parents)
{
int i = 0 , ret;
u32 total_parents = clock[clk_id].num_parents;
struct clock_topology *clk_nodes;
struct clock_parent *parents;
clk_nodes = clock[clk_id].node;
parents = clock[clk_id].parent;
for (i = 0 ; i < total_parents; i++) {
if (!parents[i].flag) {
parent_list[i] = parents[i].name;
} else if (parents[i].flag == PARENT_CLK_EXTERNAL) {
ret = of_property_match_string(np, "clock-names" ,
parents[i].name);
if (ret < 0 )
strcpy(parents[i].name, "dummy_name" );
parent_list[i] = parents[i].name;
} else {
strcat(parents[i].name,
clk_type_postfix[clk_nodes[parents[i].flag - 1 ].
type]);
parent_list[i] = parents[i].name;
}
}
*num_parents = total_parents;
return 0 ;
}
/**
* zynqmp_register_clk_topology ( ) - Register clock topology
* @ clk_id : Clock index
* @ clk_name : Clock Name
* @ num_parents : Total number of parents
* @ parent_names : List of parents name
*
* Return : Returns either clock hardware or error + reason
*/
static struct clk_hw *zynqmp_register_clk_topology(int clk_id, char *clk_name,
int num_parents,
const char **parent_names)
{
int j;
u32 num_nodes, clk_dev_id;
char *clk_out[MAX_NODES];
struct clock_topology *nodes;
struct clk_hw *hw = NULL;
nodes = clock[clk_id].node;
num_nodes = clock[clk_id].num_nodes;
clk_dev_id = clock[clk_id].clk_id;
for (j = 0 ; j < num_nodes; j++) {
/*
* Clock name received from firmware is output clock name .
* Intermediate clock names are postfixed with type of clock .
*/
if (j != (num_nodes - 1 )) {
clk_out[j] = kasprintf(GFP_KERNEL, "%s%s" , clk_name,
clk_type_postfix[nodes[j].type]);
} else {
clk_out[j] = kasprintf(GFP_KERNEL, "%s" , clk_name);
}
if (!clk_topology[nodes[j].type])
continue ;
hw = (*clk_topology[nodes[j].type])(clk_out[j], clk_dev_id,
parent_names,
num_parents,
&nodes[j]);
if (IS_ERR(hw))
pr_warn_once("%s() 0x%x: %s register fail with %ld\n" ,
__func__, clk_dev_id, clk_name,
PTR_ERR(hw));
parent_names[0 ] = clk_out[j];
}
for (j = 0 ; j < num_nodes; j++)
kfree(clk_out[j]);
return hw;
}
/**
* zynqmp_register_clocks ( ) - Register clocks
* @ np : Device node
*
* Return : 0 on success else error code
*/
static int zynqmp_register_clocks(struct device_node *np)
{
int ret;
u32 i, total_parents = 0 , type = 0 ;
const char *parent_names[MAX_PARENT];
for (i = 0 ; i < clock_max_idx; i++) {
char clk_name[MAX_NAME_LEN];
/* get clock name, continue to next clock if name not found */
if (zynqmp_get_clock_name(i, clk_name))
continue ;
/* Check if clock is valid and output clock.
* Do not register invalid or external clock .
*/
ret = zynqmp_get_clock_type(i, &type);
if (ret || type != CLK_TYPE_OUTPUT)
continue ;
/* Get parents of clock*/
if (zynqmp_get_parent_list(np, i, parent_names,
&total_parents)) {
WARN_ONCE(1 , "No parents found for %s\n" ,
clock[i].clk_name);
continue ;
}
zynqmp_data->hws[i] =
zynqmp_register_clk_topology(i, clk_name,
total_parents,
parent_names);
}
for (i = 0 ; i < clock_max_idx; i++) {
if (IS_ERR(zynqmp_data->hws[i])) {
pr_err("Zynq Ultrascale+ MPSoC clk %s: register failed with %ld\n" ,
clock[i].clk_name, PTR_ERR(zynqmp_data->hws[i]));
WARN_ON(1 );
}
}
return 0 ;
}
/**
* zynqmp_get_clock_info ( ) - Get clock information from firmware using PM_API
*/
static void zynqmp_get_clock_info(void )
{
int i, ret;
u32 type = 0 ;
u32 nodetype, subclass, class ;
struct attr_resp attr;
struct name_resp name;
for (i = 0 ; i < clock_max_idx; i++) {
ret = zynqmp_pm_clock_get_attributes(i, &attr);
if (ret)
continue ;
clock[i].valid = FIELD_GET(CLK_ATTR_VALID, attr.attr[0 ]);
/* skip query for Invalid clock */
ret = zynqmp_is_valid_clock(i);
if (ret != CLK_ATTR_VALID)
continue ;
clock[i].type = FIELD_GET(CLK_ATTR_TYPE, attr.attr[0 ]) ?
CLK_TYPE_EXTERNAL : CLK_TYPE_OUTPUT;
nodetype = FIELD_GET(CLK_ATTR_NODE_TYPE, attr.attr[0 ]);
subclass = FIELD_GET(CLK_ATTR_NODE_SUBCLASS, attr.attr[0 ]);
class = FIELD_GET(CLK_ATTR_NODE_CLASS, attr.attr[0 ]);
clock[i].clk_id = FIELD_PREP(CLK_ATTR_NODE_CLASS, class ) |
FIELD_PREP(CLK_ATTR_NODE_SUBCLASS, subclass) |
FIELD_PREP(CLK_ATTR_NODE_TYPE, nodetype) |
FIELD_PREP(CLK_ATTR_NODE_INDEX, i);
zynqmp_pm_clock_get_name(clock[i].clk_id, &name);
/*
* Terminate with NULL character in case name provided by firmware
* is longer and truncated due to size limit .
*/
name.name[sizeof (name.name) - 1 ] = '\0' ;
if (!strcmp(name.name, RESERVED_CLK_NAME))
continue ;
strscpy(clock[i].clk_name, name.name, MAX_NAME_LEN);
}
/* Get topology of all clock */
for (i = 0 ; i < clock_max_idx; i++) {
ret = zynqmp_get_clock_type(i, &type);
if (ret || type != CLK_TYPE_OUTPUT)
continue ;
ret = zynqmp_clock_get_topology(i, clock[i].node,
&clock[i].num_nodes);
if (ret)
continue ;
ret = zynqmp_clock_get_parents(i, clock[i].parent,
&clock[i].num_parents);
if (ret)
continue ;
}
}
/**
* zynqmp_clk_setup ( ) - Setup the clock framework and register clocks
* @ np : Device node
*
* Return : 0 on success else error code
*/
static int zynqmp_clk_setup(struct device_node *np)
{
int ret;
ret = zynqmp_pm_clock_get_num_clocks(&clock_max_idx);
if (ret)
return ret;
zynqmp_data = kzalloc(struct_size(zynqmp_data, hws, clock_max_idx),
GFP_KERNEL);
if (!zynqmp_data)
return -ENOMEM;
clock = kcalloc(clock_max_idx, sizeof (*clock), GFP_KERNEL);
if (!clock) {
kfree(zynqmp_data);
return -ENOMEM;
}
zynqmp_get_clock_info();
zynqmp_register_clocks(np);
zynqmp_data->num = clock_max_idx;
return of_clk_add_hw_provider(np, of_clk_hw_onecell_get, zynqmp_data);
}
static int zynqmp_clock_probe(struct platform_device *pdev)
{
int ret;
struct device *dev = &pdev->dev;
ret = zynqmp_clk_setup(dev->of_node);
return ret;
}
static const struct of_device_id zynqmp_clock_of_match[] = {
{.compatible = "xlnx,zynqmp-clk" },
{.compatible = "xlnx,versal-clk" },
{},
};
MODULE_DEVICE_TABLE(of, zynqmp_clock_of_match);
static struct platform_driver zynqmp_clock_driver = {
.driver = {
.name = "zynqmp_clock" ,
.of_match_table = zynqmp_clock_of_match,
},
.probe = zynqmp_clock_probe,
};
module_platform_driver(zynqmp_clock_driver);
Messung V0.5 in Prozent C=97 H=91 G=93
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-11)
¤
*© Formatika GbR, Deutschland