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commitaab0a4c83cupstream. The memory range assigned to the PMC (Power Management Controller) was not including the PMC_PCR register which are used to control peripheral clocks. This was working fine thanks to the page granularity of ioremap(), but started to fail when we switched to syscon/regmap, because regmap is making sure that all accesses are falling into the reserved range. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reported-by: Richard Genoud <richard.genoud@gmail.com> Tested-by: Richard Genoud <richard.genoud@gmail.com> Fixes:863a81c3be("clk: at91: make use of syscon to share PMC registers in several drivers") Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>