This series cleans up the timer drivers in RISC-V and converts them to DM.
This series needs to be tested! I have only tested it on QEMU and the K210. Notably, this means that the HiFive and anything Andes is completely untested.
This series depends on [1]. Without that patch, build will fail for sifive targets.
[1] http://patchwork.ozlabs.org/project/uboot/patch/1600157107-57175-2-git-send-...
Changes in v5: - Add test for timer_timebase_fallback - Don't add a dependency on REGMAP for SIFIVE_FU540_DDR. Instead, depend on Bin Meng's patch. - Remove RISCV_SYSCON_PLMT - Undo changes to ae350 device trees. They are unnecessary with timer_timebase_fallback.
Changes in v4: - Both the Andes PMLT and Sifive CLINT now fall back on timebase-frequency, per discussion with Anup Patel - Introduce helper function for falling back on timebase-frequency - Modify RISCV_TIMER KConfig - Now depends on RISCV - Implied by S-Mode (with or without SPL) - Rebase - Remove clock-frequency property from k210 clint binding because we fall back on timebase-frequency
Changes in v3: - Don't initialize the IPI in spl_invoke_opensbi. Further testing has revealed it to be unnecessary. - Rebase
Changes in v2: - Fix SiFive CLINT not getting tick-rate from rtcclk - Remove RISCV_RDTIME KConfig option - Split Kendryte binding changes into their own commit
Sean Anderson (9): riscv: Rework riscv timer driver to only support S-mode timer: Add helper for drivers using timebase fallback timer: Add a test for timer_timebase_fallback riscv: Rework Andes PLMT as a UCLASS_TIMER driver riscv: Clean up initialization in Andes PLIC riscv: Rework Sifive CLINT as UCLASS_TIMER driver riscv: clk: Add CLINT clock to kendryte clock driver riscv: Update Kendryte device tree for new CLINT driver riscv: Update SiFive device tree for new CLINT driver
arch/riscv/Kconfig | 16 ----- arch/riscv/cpu/ax25/Kconfig | 2 +- arch/riscv/cpu/fu540/Kconfig | 2 +- arch/riscv/cpu/generic/Kconfig | 2 +- arch/riscv/dts/fu540-c000-u-boot.dtsi | 8 ++- .../dts/hifive-unleashed-a00-u-boot.dtsi | 4 ++ arch/riscv/dts/k210.dtsi | 7 +- arch/riscv/include/asm/global_data.h | 3 - arch/riscv/include/asm/syscon.h | 4 +- arch/riscv/lib/Makefile | 1 - arch/riscv/lib/andes_plic.c | 58 +++++++--------- arch/riscv/lib/andes_plmt.c | 44 ++++++------- arch/riscv/lib/rdtime.c | 38 ----------- arch/riscv/lib/sifive_clint.c | 66 ++++++++++--------- arch/sandbox/dts/test.dts | 9 ++- arch/sandbox/include/asm/cpu.h | 11 ++++ drivers/clk/kendryte/clk.c | 4 ++ drivers/cpu/cpu_sandbox.c | 39 +++++++++-- drivers/timer/Kconfig | 4 +- drivers/timer/riscv_timer.c | 39 +++++------ drivers/timer/sandbox_timer.c | 4 +- drivers/timer/timer-uclass.c | 25 +++++++ include/dt-bindings/clock/k210-sysctl.h | 1 + include/timer.h | 15 +++++ test/dm/timer.c | 27 +++++++- 25 files changed, 248 insertions(+), 185 deletions(-) delete mode 100644 arch/riscv/lib/rdtime.c create mode 100644 arch/sandbox/include/asm/cpu.h