Hi, this patch-set adds Z and Z2 clock support. These are dependencies for supporting CPUFreq. The remainder of that work is being posted separately and can be found at: https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git topic/rcar-gen3-cpufreq A description of steps taken to lightly exercise the same feature for the r88a7795 the above can be found at the link below. The results are the same for the r8a7796 with the exception that it has two active CPU cores rather than four. http://elinux.org/Tests:R-CAR-GEN3-CPUFreq Further testing on Salvator-X/M3-W ES1.0 is as follows: # cd /sys/devices/system/cpu/cpu0/cpufreq # grep . /sys/devices/system/cpu/cpu*/cpufreq/*_cur_freq /sys/kernel/debug/clk/z/clk_rate /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq:468749 /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq:500000 /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq:468749 /sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq:500000 /sys/kernel/debug/clk/z/clk_rate:468749981 # echo performance > scaling_governor # grep . /sys/devices/system/cpu/cpu*/cpufreq/*_cur_freq /sys/kernel/debug/clk/z/clk_rate /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq:1499999 /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq:1500000 /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq:1499999 /sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq:1500000 /sys/kernel/debug/clk/z/clk_rate:1499999940 # echo 1000000 > scaling_max_freq # grep . /sys/devices/system/cpu/cpu*/cpufreq/*_cur_freq /sys/kernel/debug/clk/z/clk_rate /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq:937499 /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq:1000000 /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq:937499 /sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq:1000000 /sys/kernel/debug/clk/z/clk_rate:937499963 # echo 500000 > scaling_max_freq # grep . /sys/devices/system/cpu/cpu*/cpufreq/*_cur_freq /sys/kernel/debug/clk/z/clk_rate /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq:468749 /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq:500000 /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq:468749 /sys/devices/system/cpu/cpu1/cpufreq/scaling_cur_freq:500000 /sys/kernel/debug/clk/z2/clk_rate:2399999904 Based on clk-renesas-for-v4.15-tag1 Changes since v2: * Rebase * Address review of v2 as noted in patch changelogs Takeshi Kihara (6): clk: renesas: rcar-gen3: Add Z clock divider support clk: renesas: rcar-gen3: Add Z2 clock divider support clk: renesas: r8a7795: Add Z clock clk: renesas: r8a7795: Add Z2 clock clk: renesas: r8a7796: Add Z clock clk: renesas: r8a7796: Add Z2 clock drivers/clk/renesas/r8a7795-cpg-mssr.c | 2 + drivers/clk/renesas/r8a7796-cpg-mssr.c | 2 + drivers/clk/renesas/rcar-gen3-cpg.c | 136 +++++++++++++++++++++++++++++++++ drivers/clk/renesas/rcar-gen3-cpg.h | 2 + 4 files changed, 142 insertions(+) -- 2.1.4
