diff options
Diffstat (limited to 'Documentation/printk-formats.txt')
| -rw-r--r-- | Documentation/printk-formats.txt | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt index 445ad743ec81..6f4eb322ffaf 100644 --- a/Documentation/printk-formats.txt +++ b/Documentation/printk-formats.txt @@ -55,14 +55,21 @@ Struct Resources: For printing struct resources. The 'R' and 'r' specifiers result in a printed resource with ('R') or without ('r') a decoded flags member. -Physical addresses: +Physical addresses types phys_addr_t: - %pa 0x01234567 or 0x0123456789abcdef + %pa[p] 0x01234567 or 0x0123456789abcdef For printing a phys_addr_t type (and its derivatives, such as resource_size_t) which can vary based on build options, regardless of the width of the CPU data path. Passed by reference. +DMA addresses types dma_addr_t: + + %pad 0x01234567 or 0x0123456789abcdef + + For printing a dma_addr_t type which can vary based on build options, + regardless of the width of the CPU data path. Passed by reference. + Raw buffer as a hex string: %*ph 00 01 02 ... 3f %*phC 00:01:02: ... :3f |