When booting under OP-TEE, the SYSC is secured which means the PIT is also not accessible by non-secure world. The TCB 0 however is always available for non-secure world and thus can be used. This series add a TCB driver and enables it in sama5d2 configs.
--- Changes in v8: - Switch clock to use t0_clk, generated clk does not works if parent clock is slow_ck. Moreover, tcb0_clk needs to be enabled for the TCB to operate correctly - Change driver to use TCB_CMR_TIMER_CLOCK2 (tcb0_clk / 8) - Add potential missing clk_enable() - Add u-boot,dm-pre-reloc properties to TCB nodes and to its dependencies in order to be used in SPL
Changes in v7: - Keep the exact same Linux aic node definition - Fixed a few constant definition to use (1 << x)
Changes in V6: - Fix node ordering in device tree - Disable CONFIG_PIT_TIMER in sama5d2 configuration file - Fixed mach-at91/armv7/Makefile to allow building with TCB
Changes in v5: - Fixed missing include in .dts file for IRQ defines - Add aic interrupt controller node to avoid DTC warnings
Changes in v4: - Add missing interrupts property to tcb node
Changes in v3: - Remove useless defines - Add printf in case of unsupported timers specified in device-tree - Add "syscon" compatible to tcb node
Changes in v2: - Reworked driver to use existing Linux bindings
Clément Léger (5): timer: atmel_tcb_timer: add atmel_tcb driver ARM: dts: at91: sama5d2: add AIC node ARM: dts: at91: sama5d2: add TCB node ARM: dts: at91: sama5d2: add u-boot,dm-pre-reloc property for TCB configs: sama5d2: enable option CONFIG_ATMEL_TCB_TIMER
MAINTAINERS | 1 + arch/arm/dts/sama5d2.dtsi | 28 ++++ arch/arm/mach-at91/armv7/Makefile | 2 + configs/sama5d2_icp_mmc_defconfig | 2 +- configs/sama5d2_ptc_ek_mmc_defconfig | 2 +- configs/sama5d2_ptc_ek_nandflash_defconfig | 2 +- configs/sama5d2_xplained_emmc_defconfig | 2 +- configs/sama5d2_xplained_mmc_defconfig | 2 +- configs/sama5d2_xplained_qspiflash_defconfig | 2 +- configs/sama5d2_xplained_spiflash_defconfig | 2 +- drivers/timer/Kconfig | 8 + drivers/timer/Makefile | 1 + drivers/timer/atmel_tcb_timer.c | 161 +++++++++++++++++++ 13 files changed, 208 insertions(+), 7 deletions(-) create mode 100644 drivers/timer/atmel_tcb_timer.c