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Documentation / devicetree / bindings / power_supply / qcom_smbb.txt


Based on kernel version 4.8. Page generated on 2016-10-06 23:13 EST.

1	Qualcomm Switch-Mode Battery Charger and Boost
2	
3	PROPERTIES
4	- compatible:
5	  Usage: required
6	  Value type: <stringlist>
7	  Description: Must be one of:
8	               - "qcom,pm8941-charger"
9	
10	- reg:
11	  Usage: required
12	  Value type: <prop-encoded-array>
13	  Description: Base address of registers for SMBB block
14	
15	- interrupts:
16	  Usage: required
17	  Value type: <prop-encoded-array>
18	  Description: The format of the specifier is defined by the binding document
19	               describing the node's interrupt parent.  Must contain one
20	               specifier for each of the following interrupts, in order:
21	               - charge done
22	               - charge fast mode
23	               - charge trickle mode
24	               - battery temperature ok
25	               - battery present
26	               - charger disconnected
27	               - USB-in valid
28	               - DC-in valid
29	
30	- interrupt-names:
31	  Usage: required
32	  Value type: <stringlist>
33	  Description: Must contain the following list, strictly ordered:
34	               "chg-done",
35	               "chg-fast",
36	               "chg-trkl",
37	               "bat-temp-ok",
38	               "bat-present",
39	               "chg-gone",
40	               "usb-valid",
41	               "dc-valid"
42	
43	- qcom,fast-charge-current-limit:
44	  Usage: optional (default: 1A, or pre-configured value)
45	  Value type: <u32>; uA; range [100mA : 3A]
46	  Description: Maximum charge current; May be clamped to safety limits.
47	
48	- qcom,fast-charge-low-threshold-voltage:
49	  Usage: optional (default: 3.2V, or pre-configured value)
50	  Value type: <u32>; uV; range [2.1V : 3.6V]
51	  Description: Battery voltage limit above which fast charging may operate;
52	               Below this value linear or switch-mode auto-trickle-charging
53	               will operate.
54	
55	- qcom,fast-charge-high-threshold-voltage:
56	  Usage: optional (default: 4.2V, or pre-configured value)
57	  Value type: <u32>; uV; range [3.24V : 5V]
58	  Description: Battery voltage limit below which fast charging may operate;
59	               The fast charger will attempt to charge the battery to this
60	               voltage.  May be clamped to safety limits.
61	
62	- qcom,fast-charge-safe-voltage:
63	  Usage: optional (default: 4.2V, or pre-configured value)
64	  Value type: <u32>; uV; range [3.24V : 5V]
65	  Description: Maximum safe battery voltage; May be pre-set by bootloader, in
66	               which case, setting this will harmlessly fail. The property
67	               'fast-charge-high-watermark' will be clamped by this value.
68	
69	- qcom,fast-charge-safe-current:
70	  Usage: optional (default: 1A, or pre-configured value)
71	  Value type: <u32>; uA; range [100mA : 3A]
72	  Description: Maximum safe battery charge current; May pre-set by bootloader,
73	               in which case, setting this will harmlessly fail. The property
74	               'qcom,fast-charge-current-limit' will be clamped by this value.
75	
76	- qcom,auto-recharge-threshold-voltage:
77	  Usage: optional (default: 4.1V, or pre-configured value)
78	  Value type: <u32>; uV; range [3.24V : 5V]
79	  Description: Battery voltage limit below which auto-recharge functionality
80	               will restart charging after end-of-charge;  The high cutoff
81	               limit for auto-recharge is 5% above this value.
82	
83	- qcom,minimum-input-voltage:
84	  Usage: optional (default: 4.3V, or pre-configured value)
85	  Value type: <u32>; uV; range [4.2V : 9.6V]
86	  Description: Input voltage level above which charging may operate
87	
88	- qcom,dc-current-limit:
89	  Usage: optional (default: 100mA, or pre-configured value)
90	  Value type: <u32>; uA; range [100mA : 2.5A]
91	  Description: Default DC charge current limit
92	
93	- qcom,disable-dc:
94	  Usage: optional (default: false)
95	  Value type: boolean: <u32> or <empty>
96	  Description: Disable DC charger
97	
98	- qcom,jeita-extended-temp-range:
99	  Usage: optional (default: false)
100	  Value type: boolean: <u32> or <empty>
101	  Description: Enable JEITA extended temperature range;  This does *not*
102	               adjust the maximum charge voltage or current in the extended
103	               temperature range.  It only allows charging when the battery
104	               is in the extended temperature range.  Voltage/current
105	               regulation must be done externally to fully comply with
106	               the JEITA safety guidelines if this flag is set.
107	
108	EXAMPLE
109	charger@1000 {
110	       compatible = "qcom,pm8941-charger";
111	       reg = <0x1000 0x700>;
112	       interrupts = <0x0 0x10 7 IRQ_TYPE_EDGE_BOTH>,
113	                       <0x0 0x10 5 IRQ_TYPE_EDGE_BOTH>,
114	                       <0x0 0x10 4 IRQ_TYPE_EDGE_BOTH>,
115	                       <0x0 0x12 1 IRQ_TYPE_EDGE_BOTH>,
116	                       <0x0 0x12 0 IRQ_TYPE_EDGE_BOTH>,
117	                       <0x0 0x13 2 IRQ_TYPE_EDGE_BOTH>,
118	                       <0x0 0x13 1 IRQ_TYPE_EDGE_BOTH>,
119	                       <0x0 0x14 1 IRQ_TYPE_EDGE_BOTH>;
120	       interrupt-names = "chg-done",
121	                       "chg-fast",
122	                       "chg-trkl",
123	                       "bat-temp-ok",
124	                       "bat-present",
125	                       "chg-gone",
126	                       "usb-valid",
127	                       "dc-valid";
128	
129	       qcom,fast-charge-current-limit = <1000000>;
130	       qcom,dc-charge-current-limit = <1000000>;
131	};
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