This patch adds reset controller driver for MediaTek MIPS platform and header file for mt7628.
Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- drivers/reset/Kconfig | 7 ++ drivers/reset/Makefile | 1 + drivers/reset/reset-mtmips.c | 82 ++++++++++++++++++++++++ include/dt-bindings/reset/mt7628-reset.h | 36 +++++++++++ 4 files changed, 126 insertions(+) create mode 100644 drivers/reset/reset-mtmips.c create mode 100644 include/dt-bindings/reset/mt7628-reset.h
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 6ec6f39c85..76866a2e90 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -113,6 +113,13 @@ config RESET_MEDIATEK help Support for reset controller on MediaTek SoCs.
+config RESET_MTMIPS + bool "Reset controller driver for MediaTek MIPS platform" + depends on DM_RESET && ARCH_MTMIPS + default y + help + Support for reset controller on MediaTek MIPS platform. + config RESET_SUNXI bool "RESET support for Allwinner SoCs" depends on DM_RESET && ARCH_SUNXI diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index 7fec75bb49..87d2bc4f18 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -18,5 +18,6 @@ obj-$(CONFIG_RESET_ROCKCHIP) += reset-rockchip.o obj-$(CONFIG_RESET_MESON) += reset-meson.o obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o obj-$(CONFIG_RESET_MEDIATEK) += reset-mediatek.o +obj-$(CONFIG_RESET_MTMIPS) += reset-mtmips.o obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o obj-$(CONFIG_RESET_HISILICON) += reset-hisilicon.o diff --git a/drivers/reset/reset-mtmips.c b/drivers/reset/reset-mtmips.c new file mode 100644 index 0000000000..59734565d7 --- /dev/null +++ b/drivers/reset/reset-mtmips.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <reset-uclass.h> +#include <linux/io.h> + +struct mtmips_reset_priv { + void __iomem *base; +}; + +static int mtmips_reset_request(struct reset_ctl *reset_ctl) +{ + return 0; +} + +static int mtmips_reset_free(struct reset_ctl *reset_ctl) +{ + return 0; +} + +static int mtmips_reset_assert(struct reset_ctl *reset_ctl) +{ + struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev); + + setbits_32(priv->base, BIT(reset_ctl->id)); + + return 0; +} + +static int mtmips_reset_deassert(struct reset_ctl *reset_ctl) +{ + struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev); + + clrbits_32(priv->base, BIT(reset_ctl->id)); + + return 0; +} + +static const struct reset_ops mtmips_reset_ops = { + .request = mtmips_reset_request, + .free = mtmips_reset_free, + .rst_assert = mtmips_reset_assert, + .rst_deassert = mtmips_reset_deassert, +}; + +static int mtmips_reset_probe(struct udevice *dev) +{ + return 0; +} + +static int mtmips_reset_ofdata_to_platdata(struct udevice *dev) +{ + struct mtmips_reset_priv *priv = dev_get_priv(dev); + + priv->base = (void __iomem *)dev_remap_addr_index(dev, 0); + if (!priv->base) + return -EINVAL; + + return 0; +} + +static const struct udevice_id mtmips_reset_ids[] = { + { .compatible = "mediatek,mtmips-reset" }, + { } +}; + +U_BOOT_DRIVER(mtmips_reset) = { + .name = "mtmips-reset", + .id = UCLASS_RESET, + .of_match = mtmips_reset_ids, + .ofdata_to_platdata = mtmips_reset_ofdata_to_platdata, + .probe = mtmips_reset_probe, + .priv_auto_alloc_size = sizeof(struct mtmips_reset_priv), + .ops = &mtmips_reset_ops, +}; diff --git a/include/dt-bindings/reset/mt7628-reset.h b/include/dt-bindings/reset/mt7628-reset.h new file mode 100644 index 0000000000..2a674c1ea7 --- /dev/null +++ b/include/dt-bindings/reset/mt7628-reset.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 MediaTek Inc. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#ifndef _DT_BINDINGS_MT7628_RESET_H_ +#define _DT_BINDINGS_MT7628_RESET_H_ + +#define MT7628_PWM_RST 31 +#define MT7628_SDXC_RST 30 +#define MT7628_CRYPTO_RST 29 +#define MT7628_AUX_STCK_RST 28 +#define MT7628_PCIE_RST 26 +#define MT7628_EPHY_RST 24 +#define MT7628_ETH_RST 23 +#define MT7628_UPHY_RST 22 +#define MT7628_UART2_RST 20 +#define MT7628_UART1_RST 19 +#define MT7628_SPI_RST 18 +#define MT7628_I2S_RST 17 +#define MT7628_I2C_RST 16 +#define MT7628_GDMA_RST 14 +#define MT7628_PIO_RST 13 +#define MT7628_UART0_RST 12 +#define MT7628_PCM_RST 11 +#define MT7628_MC_RST 10 +#define MT7628_INT_RST 9 +#define MT7628_TIMER_RST 8 +#define MT7628_HIF_RST 5 +#define MT7628_WIFI_RST 4 +#define MT7628_SPIS_RST 3 +#define MT7628_SYS_RST 0 + +#endif /* _DT_BINDINGS_MT7628_RESET_H_ */