On Wednesday 17 August 2022 21:37:51 Michael Walle wrote: > Add timer support for Kirkwood and MVEBU devices. > > Cc: Pali Rohár <p...@kernel.org> > Signed-off-by: Michael Walle <mich...@walle.cc>
Acked-by: Pali Rohár <p...@kernel.org> > --- > drivers/timer/Kconfig | 6 ++++ > drivers/timer/Makefile | 1 + > drivers/timer/orion-timer.c | 63 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 70 insertions(+) > create mode 100644 drivers/timer/orion-timer.c > > diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig > index 20b5af7e26..4049290148 100644 > --- a/drivers/timer/Kconfig > +++ b/drivers/timer/Kconfig > @@ -194,6 +194,12 @@ config OMAP_TIMER > help > Select this to enable an timer for Omap devices. > > +config ORION_TIMER > + bool "Orion timer support" > + depends on TIMER > + help > + Select this to enable an timer for Orion devices. > + > config RISCV_TIMER > bool "RISC-V timer support" > depends on TIMER && RISCV > diff --git a/drivers/timer/Makefile b/drivers/timer/Makefile > index d9822a5370..560e2d27e1 100644 > --- a/drivers/timer/Makefile > +++ b/drivers/timer/Makefile > @@ -17,6 +17,7 @@ obj-$(CONFIG_MPC83XX_TIMER) += mpc83xx_timer.o > obj-$(CONFIG_NOMADIK_MTU_TIMER) += nomadik-mtu-timer.o > obj-$(CONFIG_NPCM_TIMER) += npcm-timer.o > obj-$(CONFIG_OMAP_TIMER) += omap-timer.o > +obj-$(CONFIG_ORION_TIMER) += orion-timer.o > obj-$(CONFIG_RENESAS_OSTM_TIMER) += ostm_timer.o > obj-$(CONFIG_RISCV_TIMER) += riscv_timer.o > obj-$(CONFIG_ROCKCHIP_TIMER) += rockchip_timer.o > diff --git a/drivers/timer/orion-timer.c b/drivers/timer/orion-timer.c > new file mode 100644 > index 0000000000..fd30e1bf03 > --- /dev/null > +++ b/drivers/timer/orion-timer.c > @@ -0,0 +1,63 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +#include <asm/io.h> > +#include <common.h> > +#include <dm/device.h> > +#include <dm/fdtaddr.h> > +#include <timer.h> > + > +#define TIMER_CTRL 0x00 > +#define TIMER0_EN BIT(0) > +#define TIMER0_RELOAD_EN BIT(1) > +#define TIMER0_RELOAD 0x10 > +#define TIMER0_VAL 0x14 > + > +struct orion_timer_priv { > + void *base; > +}; > + > +static uint64_t orion_timer_get_count(struct udevice *dev) > +{ > + struct orion_timer_priv *priv = dev_get_priv(dev); > + > + return ~readl(priv->base + TIMER0_VAL); > +} > + > +static int orion_timer_probe(struct udevice *dev) > +{ > + struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev); > + struct orion_timer_priv *priv = dev_get_priv(dev); > + > + priv->base = devfdt_remap_addr_index(dev, 0); > + if (!priv->base) { > + debug("unable to map registers\n"); > + return -ENOMEM; > + } > + > + uc_priv->clock_rate = CONFIG_SYS_TCLK; > + > + writel(~0, priv->base + TIMER0_VAL); > + writel(~0, priv->base + TIMER0_RELOAD); > + > + /* enable timer */ > + setbits_le32(priv->base + TIMER_CTRL, TIMER0_EN | TIMER0_RELOAD_EN); > + > + return 0; > +} > + > +static const struct timer_ops orion_timer_ops = { > + .get_count = orion_timer_get_count, > +}; > + > +static const struct udevice_id orion_timer_ids[] = { > + { .compatible = "marvell,orion-timer" }, > + {} > +}; > + > +U_BOOT_DRIVER(orion_timer) = { > + .name = "orion_timer", > + .id = UCLASS_TIMER, > + .of_match = orion_timer_ids, > + .probe = orion_timer_probe, > + .ops = &orion_timer_ops, > + .priv_auto = sizeof(struct orion_timer_priv), > +}; > -- > 2.30.2 >