diff options
Diffstat (limited to 'drivers/firmware/ti_sci.h')
| -rw-r--r-- | drivers/firmware/ti_sci.h | 65 |
1 files changed, 53 insertions, 12 deletions
diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h index 4983827151bf..414e0ced5409 100644 --- a/drivers/firmware/ti_sci.h +++ b/drivers/firmware/ti_sci.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: BSD-3-Clause +/* SPDX-License-Identifier: BSD-3-Clause */ /* * Texas Instruments System Control Interface (TISCI) Protocol * @@ -202,7 +202,8 @@ struct ti_sci_msg_req_set_device_resets { * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes - * which clock input to modify. + * which clock input to modify. Set to 255 if clock ID is + * greater than or equal to 255. * @request_state: Request the state for the clock to be set to. * MSG_CLOCK_SW_STATE_UNREQ: The IP does not require this clock, * it can be disabled, regardless of the state of the device @@ -213,6 +214,9 @@ struct ti_sci_msg_req_set_device_resets { * being required by the device.(default) * MSG_CLOCK_SW_STATE_REQ: Configure the clock to be enabled, * regardless of the state of the device. + * @clk_id_32: Clock identifier for the device for this request. + * Only to be used if the clock ID is greater than or equal to + * 255. * * Normally, all required clocks are managed by TISCI entity, this is used * only for specific control *IF* required. Auto managed state is @@ -234,6 +238,7 @@ struct ti_sci_msg_req_set_clock_state { #define MSG_CLOCK_SW_STATE_AUTO 1 #define MSG_CLOCK_SW_STATE_REQ 2 u8 request_state; + u32 clk_id_32; } __packed; /** @@ -242,7 +247,11 @@ struct ti_sci_msg_req_set_clock_state { * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes - * which clock input to get state of. + * which clock input to get state of. Set to 255 if the clock + * ID is greater than or equal to 255. + * @clk_id_32: Clock identifier for the device for the request. + * Only to be used if the clock ID is greater than or equal to + * 255. * * Request type is TI_SCI_MSG_GET_CLOCK_STATE, response is state * of the clock @@ -251,6 +260,7 @@ struct ti_sci_msg_req_get_clock_state { struct ti_sci_msg_hdr hdr; u32 dev_id; u8 clk_id; + u32 clk_id_32; } __packed; /** @@ -278,9 +288,13 @@ struct ti_sci_msg_resp_get_clock_state { * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes - * which clock input to modify. + * which clock input to modify. Set to 255 if clock ID is + * greater than or equal to 255. * @parent_id: The new clock parent is selectable by an index via this - * parameter. + * parameter. Set to 255 if clock ID is greater than or + * equal to 255. + * @clk_id_32: Clock identifier if @clk_id field is 255. + * @parent_id_32: Parent identifier if @parent_id is 255. * * Request type is TI_SCI_MSG_SET_CLOCK_PARENT, response is generic * ACK / NACK message. @@ -290,6 +304,8 @@ struct ti_sci_msg_req_set_clock_parent { u32 dev_id; u8 clk_id; u8 parent_id; + u32 clk_id_32; + u32 parent_id_32; } __packed; /** @@ -298,7 +314,10 @@ struct ti_sci_msg_req_set_clock_parent { * @dev_id: Device identifier this request is for * @clk_id: Clock identifier for the device for this request. * Each device has it's own set of clock inputs. This indexes - * which clock input to get the parent for. + * which clock input to get the parent for. If this field + * contains 255, the actual clock identifier is stored in + * @clk_id_32. + * @clk_id_32: Clock identifier if the @clk_id field contains 255. * * Request type is TI_SCI_MSG_GET_CLOCK_PARENT, response is parent information */ @@ -306,25 +325,32 @@ struct ti_sci_msg_req_get_clock_parent { struct ti_sci_msg_hdr hdr; u32 dev_id; u8 clk_id; + u32 clk_id_32; } __packed; /** * struct ti_sci_msg_resp_get_clock_parent - Response with clock parent * @hdr: Generic Header - * @parent_id: The current clock parent + * @parent_id: The current clock parent. If set to 255, the current parent + * ID can be found from the @parent_id_32 field. + * @parent_id_32: Current clock parent if @parent_id field is set to + * 255. * * Response to TI_SCI_MSG_GET_CLOCK_PARENT. */ struct ti_sci_msg_resp_get_clock_parent { struct ti_sci_msg_hdr hdr; u8 parent_id; + u32 parent_id_32; } __packed; /** * struct ti_sci_msg_req_get_clock_num_parents - Request to get clock parents * @hdr: Generic header * @dev_id: Device identifier this request is for - * @clk_id: Clock identifier for the device for this request. + * @clk_id: Clock identifier for the device for this request. Set to + * 255 if clock ID is greater than or equal to 255. + * @clk_id_32: Clock identifier if the @clk_id field contains 255. * * This request provides information about how many clock parent options * are available for a given clock to a device. This is typically used @@ -337,18 +363,24 @@ struct ti_sci_msg_req_get_clock_num_parents { struct ti_sci_msg_hdr hdr; u32 dev_id; u8 clk_id; + u32 clk_id_32; } __packed; /** * struct ti_sci_msg_resp_get_clock_num_parents - Response for get clk parents * @hdr: Generic header - * @num_parents: Number of clock parents + * @num_parents: Number of clock parents. If set to 255, the actual + * number of parents is stored into @num_parents_32 + * field instead. + * @num_parents_32: Number of clock parents if @num_parents field is + * set to 255. * * Response to TI_SCI_MSG_GET_NUM_CLOCK_PARENTS */ struct ti_sci_msg_resp_get_clock_num_parents { struct ti_sci_msg_hdr hdr; u8 num_parents; + u32 num_parents_32; } __packed; /** @@ -363,7 +395,9 @@ struct ti_sci_msg_resp_get_clock_num_parents { * @max_freq_hz: The maximum allowable frequency in Hz. This is the maximum * allowable programmed frequency and does not account for clock * tolerances and jitter. - * @clk_id: Clock identifier for the device for this request. + * @clk_id: Clock identifier for the device for this request. Set to + * 255 if clock identifier is greater than or equal to 255. + * @clk_id_32: Clock identifier if @clk_id is set to 255. * * NOTE: Normally clock frequency management is automatically done by TISCI * entity. In case of specific requests, TISCI evaluates capability to achieve @@ -380,6 +414,7 @@ struct ti_sci_msg_req_query_clock_freq { u64 target_freq_hz; u64 max_freq_hz; u8 clk_id; + u32 clk_id_32; } __packed; /** @@ -407,7 +442,9 @@ struct ti_sci_msg_resp_query_clock_freq { * @max_freq_hz: The maximum allowable frequency in Hz. This is the maximum * allowable programmed frequency and does not account for clock * tolerances and jitter. - * @clk_id: Clock identifier for the device for this request. + * @clk_id: Clock identifier for the device for this request. Set to + * 255 if clock ID is greater than or equal to 255. + * @clk_id_32: Clock identifier if @clk_id field is set to 255. * * NOTE: Normally clock frequency management is automatically done by TISCI * entity. In case of specific requests, TISCI evaluates capability to achieve @@ -436,13 +473,16 @@ struct ti_sci_msg_req_set_clock_freq { u64 target_freq_hz; u64 max_freq_hz; u8 clk_id; + u32 clk_id_32; } __packed; /** * struct ti_sci_msg_req_get_clock_freq - Request to get the clock frequency * @hdr: Generic Header * @dev_id: Device identifier this request is for - * @clk_id: Clock identifier for the device for this request. + * @clk_id: Clock identifier for the device for this request. Set to + * 255 if clock ID is greater than or equal to 255. + * @clk_id_32: Clock identifier if @clk_id field is set to 255. * * NOTE: Normally clock frequency management is automatically done by TISCI * entity. In some cases, clock frequencies are configured by host. @@ -454,6 +494,7 @@ struct ti_sci_msg_req_get_clock_freq { struct ti_sci_msg_hdr hdr; u32 dev_id; u8 clk_id; + u32 clk_id_32; } __packed; /** |