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Diffstat (limited to 'Documentation/core-api/printk-formats.rst')
| -rw-r--r-- | Documentation/core-api/printk-formats.rst | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst index 25dc591cb110..a7fae4538946 100644 --- a/Documentation/core-api/printk-formats.rst +++ b/Documentation/core-api/printk-formats.rst @@ -376,15 +376,15 @@ correctness of the format string and va_list arguments. Passed by reference. -kobjects --------- +Device tree nodes +----------------- :: %pOF[fnpPcCF] -For printing kobject based structs (device nodes). Default behaviour is +For printing device tree node structures. Default behaviour is equivalent to %pOFf. - f - device node full_name @@ -412,6 +412,24 @@ Examples:: Passed by reference. +Time and date (struct rtc_time) +------------------------------- + +:: + + %ptR YYYY-mm-ddTHH:MM:SS + %ptRd YYYY-mm-dd + %ptRt HH:MM:SS + %ptR[dt][r] + +For printing date and time as represented by struct rtc_time structure in +human readable format. + +By default year will be incremented by 1900 and month by 1. Use %ptRr (raw) +to suppress this behaviour. + +Passed by reference. + struct clk ---------- @@ -420,9 +438,8 @@ struct clk %pC pll1 %pCn pll1 -For printing struct clk structures. %pC and %pCn print the name -(Common Clock Framework) or address (legacy clock framework) of the -structure. +For printing struct clk structures. %pC and %pCn print the name of the clock +(Common Clock Framework) or a unique 32-bit ID (legacy clock framework). Passed by reference. |