[PATCH 0/2] clk: renesas: Use CLK_IS_CRITICAL to handle critical clocks

[Geert Uytterhoeven <geert+renesas@xxxxxxxxx>]

	Hi Mike, Stephen,

This patch series adds support for the CLK_IS_CRITICAL flag to drivers
for module clocks on Renesas ARM SoCs.  For now, this is used to prevent
disabling of the ARM GIC module clock, which would lead to a system
lock-up when accessing the GIC's registers.

  1. The first patch migrates the Renesas CPG/MSSR driver from the
     never merged CLK_ENABLE_HAND_OFF flag to the CLK_IS_CRITICAL flag.
     Note that as the driver already handled critical clocks (i.e. it
     ignored them :-), this is not a prerequisite for linking the GIC to
     its module clock in DT.

  2. The second patch makes sure the CLK_IS_CRITICAL flag is set for the
     INTC-SYS clock on SoCs not (yet) using the Renesas CPG/MSSR driver.
     Note that this is a hard dependency for describing the INTC-SYS
     clock in DT on R-Mobile APE6 and R-Car Gen2.

I plan to queue these patches in my clk-renesas-for-v4.11 branch, if
you agree.

Thanks!
        
Geert Uytterhoeven (2):
  clk: renesas: cpg-mssr: Migrate to CLK_IS_CRITICAL
  clk: renesas: mstp: Make INTC-SYS a critical clock

 drivers/clk/renesas/clk-mstp.c         |  5 +++++
 drivers/clk/renesas/renesas-cpg-mssr.c | 11 ++---------
 2 files changed, 7 insertions(+), 9 deletions(-)

-- 
1.9.1

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds