For future reference, following barebox changes were applied
on top of the scripts/checkpatch.pl copied from upstream:

4a7f56056d ("scripts: Adapt checkpatch.pl for barebox.")
2671c30c25 ("scripts/checkpatch.pl: don't search for Doxyfile when checking 
top_of_kernel_tree()")
ad3c55fbf2 ("scripts/checkpatch.pl: don't search for CREDITS when checking 
top_of_kernel_tree()")
13b0f4666d ("checkpatch: don't check TODO file presence")

        These adjust sub top_of_kernel_tree's @tree_check to eventually contain
                (
                        "arch", "commands", "common", "COPYING", "defaultenv",
                        "Documentation", "drivers", "fs", "include", "lib",
                        "MAKEALL", "Makefile", "net", "README", "scripts"
                );

9e809ef431 ("scripts: allow lines longer than 80 cols with printf() in 
checkpatch")

        adds an exception for printf, same as printk.

9496896fbf ("checkpatch: add DT compatible string documentation checks")

        searches dts/Bindings as well as Documentation/devicetree/bindings
        for compatibles.

Cc: Antony Pavlov <[email protected]>
Signed-off-by: Ahmad Fatoum <[email protected]>
---
 scripts/checkpatch.pl | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a09333fd7cef..65c2cfad45f7 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -457,7 +457,7 @@ our $typeTypedefs = qr{(?x:
 our $zero_initializer = qr{(?:(?:0[xX])?0+$Int_type?|NULL|false)\b};
 
 our $logFunctions = qr{(?x:
-       printk(?:_ratelimited|_once|_deferred_once|_deferred|)|
+       printf|printk(?:_ratelimited|_once|_deferred_once|_deferred|)|
        
(?:[a-z0-9]+_){1,2}(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)|
        TP_printk|
        WARN(?:_RATELIMIT|_ONCE|)|
@@ -1095,9 +1095,9 @@ sub top_of_kernel_tree {
        my ($root) = @_;
 
        my @tree_check = (
-               "COPYING", "CREDITS", "Kbuild", "MAINTAINERS", "Makefile",
-               "README", "Documentation", "arch", "include", "drivers",
-               "fs", "init", "ipc", "kernel", "lib", "scripts",
+               "arch", "commands", "common", "COPYING", "defaultenv",
+               "Documentation", "drivers", "fs", "include", "lib",
+               "MAKEALL", "Makefile", "net", "README", "scripts"
        );
 
        foreach my $check (@tree_check) {
@@ -3008,8 +3008,12 @@ sub process {
 
                        my @compats = $rawline =~ 
/\"([a-zA-Z0-9\-\,\.\+_]+)\"/g;
 
-                       my $dt_path = $root . 
"/Documentation/devicetree/bindings/";
-                       my $vp_file = $dt_path . "vendor-prefixes.txt";
+                       # linux device tree files
+                       my $dt_path = $root . "/dts/Bindings/";
+                       my $vp_file = $dt_path . "vendor-prefixes.txt";
+
+                       # barebox-specific bindings
+                       $dt_path = $dt_path . " " . $root . 
"/Documentation/devicetree/bindings/";
 
                        foreach my $compat (@compats) {
                                my $compat2 = $compat;
-- 
2.20.1


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