Add sysreset driver to reset rk3368 SOC.
Signed-off-by: Andy Yan andy.yan@rock-chips.com ---
drivers/sysreset/Makefile | 1 + drivers/sysreset/sysreset_rk3368.c | 58 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+) create mode 100644 drivers/sysreset/sysreset_rk3368.c
diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile index 49b8bb6..ffc61c3 100644 --- a/drivers/sysreset/Makefile +++ b/drivers/sysreset/Makefile @@ -12,6 +12,7 @@ endif obj-$(CONFIG_ROCKCHIP_RK3188) += sysreset_rk3188.o obj-$(CONFIG_ROCKCHIP_RK3288) += sysreset_rk3288.o obj-$(CONFIG_ROCKCHIP_RK3328) += sysreset_rk3328.o +obj-$(CONFIG_ROCKCHIP_RK3368) += sysreset_rk3368.o obj-$(CONFIG_ROCKCHIP_RK3399) += sysreset_rk3399.o obj-$(CONFIG_SANDBOX) += sysreset_sandbox.o obj-$(CONFIG_ARCH_SNAPDRAGON) += sysreset_snapdragon.o diff --git a/drivers/sysreset/sysreset_rk3368.c b/drivers/sysreset/sysreset_rk3368.c new file mode 100644 index 0000000..32ebc47 --- /dev/null +++ b/drivers/sysreset/sysreset_rk3368.c @@ -0,0 +1,58 @@ +/* + * (C) Copyright Rockchip Electronics Co., Ltd + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <sysreset.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/cru_rk3368.h> +#include <asm/arch/hardware.h> +#include <linux/err.h> + +static void rk3368_pll_enter_slow_mode(struct rk3368_cru *cru) +{ + struct rk3368_pll *pll; + int i; + + for (i = 0; i < 6; i++) { + pll = &cru->pll[i]; + rk_clrreg(&pll->con3, PLL_MODE_MASK); + } +} + +static int rk3368_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + struct rk3368_cru *cru = rockchip_get_cru(); + + if (IS_ERR(cru)) + return PTR_ERR(cru); + switch (type) { + case SYSRESET_WARM: + rk3368_pll_enter_slow_mode(cru); + writel(0xeca8, &cru->glb_srst_snd_val); + break; + case SYSRESET_COLD: + rk3368_pll_enter_slow_mode(cru); + writel(0xfdb9, &cru->glb_srst_fst_val); + break; + default: + return -EPROTONOSUPPORT; + } + + return -EINPROGRESS; +} + +static struct sysreset_ops rk3368_sysreset = { + .request = rk3368_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_rk3368) = { + .name = "rk3368_sysreset", + .id = UCLASS_SYSRESET, + .ops = &rk3368_sysreset, +};