Hi Rob, Geert Cc Aymeric, Goda-san Some board might use Linux and another OS in the same time. In such case, current Linux will stop necessary module clock when booting which is not used on Linux side, but is used on another OS side. To avoid such situation, this patch-set try to find status = "reserved" devices, and add CLK_IGNORE_UNUSED flag to its clock. Table 2.4: Values for status property https://github.com/devicetree-org/devicetree-specification/releases/download/v0.4/devicetree-specification-v0.4.pdf "reserved" Indicates that the device is operational, but should not be used. Typically this is used for devices that are controlled by another software component, such as platform firmware. [1/4] - [3/4] : expand existing function for "reserved" [4/4] : adjust to "reserved" device on Renesas CPG Kuninori Morimoto (4): of: add __of_device_is_status() and makes more generic status check of: add __of_get_next_status_child() and makes more generic of_get_next of: add for_each_reserved_child_of_node() drivers: clk: renesas: enable all clocks which is assinged to non Linux system drivers/clk/renesas/renesas-cpg-mssr.c | 116 +++++++++++++++++++++++-- drivers/of/base.c | 111 ++++++++++++++++------- include/linux/of.h | 11 +++ 3 files changed, 197 insertions(+), 41 deletions(-) -- 2.25.1
