diff options
| author | Burt P <pburt0@gmail.com> | 2018-09-28 20:43:41 -0500 |
|---|---|---|
| committer | Leandro A. F. Pereira <leandro@hardinfo.org> | 2018-10-22 19:45:03 -0700 |
| commit | 61ffa17d01ef8668def03e15c33d1bd0dc9be93e (patch) | |
| tree | e0f92bde2f13d5ae246f41d54678ed13ac1198cd /includes/dt_util.h | |
| parent | 7c3ba61e9e433bbad816833320c39cf5bb8afcd8 (diff) | |
devicetree: get opp-v2 freq range for gpu, if available
* opp-v2 = operating-points-v2, frequency scaling information
from device tree that can be used for cpu, gpu, etc.
* adds helper function to get the opp-v2 range of frequencies
for a node, dtr_get_opp_range() in dt_util.c
* adds a freq range in opp-v2 property for a node in dt
* reports a gpu's max clock frequency if avaiable via opp-v2
Signed-off-by: Burt P <pburt0@gmail.com>
Diffstat (limited to 'includes/dt_util.h')
| -rw-r--r-- | includes/dt_util.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/includes/dt_util.h b/includes/dt_util.h index 0fbd53cf..62b215fc 100644 --- a/includes/dt_util.h +++ b/includes/dt_util.h @@ -30,6 +30,7 @@ enum { DTP_CLOCKS, /* <phref, #clock-cells> */ DTP_GPIOS, /* <phref, #gpio-cells> */ DTP_DMAS, /* dma-specifier list */ + DTP_PH_REF_OPP2, /* phandle reference to opp-v2 table */ }; /* simplest, no aliases, doesn't require an existing dt. @@ -55,18 +56,20 @@ char *dtr_obj_alias(dtr_obj *); char *dtr_obj_symbol(dtr_obj *); char *dtr_obj_path(dtr_obj *); /* device tree path */ char *dtr_obj_full_path(dtr_obj *); /* system path */ +dtr_obj *dtr_get_parent_obj(dtr_obj *); /* find property/node 'name' relative to node * if node is NULL, then from root */ dtr_obj *dtr_get_prop_obj(dtr *, dtr_obj *node, const char *name); char *dtr_get_prop_str(dtr *, dtr_obj *node, const char *name); uint32_t dtr_get_prop_u32(dtr *, dtr_obj *node, const char *name); +uint64_t dtr_get_prop_u64(dtr *, dtr_obj *node, const char *name); /* attempts to render the object as a string */ char* dtr_str(dtr_obj *obj); int dtr_guess_type(dtr_obj *obj); -char *dtr_elem_phref(dtr *, dt_uint e, int show_path); +char *dtr_elem_phref(dtr *, dt_uint e, int show_path, const char *extra); char *dtr_elem_hex(dt_uint e); char *dtr_elem_byte(uint8_t e); char *dtr_elem_uint(dt_uint e); @@ -88,4 +91,14 @@ void dtr_msg(dtr *s, char *fmt, ...); * ex: ret = appf(ret, "%s=%s\n", name, value); */ char *appf(char *src, char *fmt, ...); +/* operating-points-v2 */ +typedef struct { + uint32_t phandle; + uint32_t khz_min; + uint32_t khz_max; + uint32_t clock_latency_ns; +} dt_opp_range; + +dt_opp_range *dtr_get_opp_range(dtr *, const char *name); + #endif |