diff options
| author | Stephen Boyd <sboyd@kernel.org> | 2026-08-13 17:42:25 -0700 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2026-08-17 09:28:08 -0700 |
| commit | df822f2e36cf2c2864d166d90cf002df4d8689e5 (patch) | |
| tree | 7245d5de17dca83a30f98ff79a83879700abfbb7 /drivers/reset | |
| parent | 804b10deb0e8872716416b38af0e4e60a038f0fd (diff) | |
| parent | cf561283254dd9f55805800237e6f82f08d91497 (diff) | |
Merge tag 'clk-misc-round-two-for-v7.3' of ssh://github.com/masneyb/linux into clk-pile
Pull clk patches from Brian Masney:
- New clock controller drivers for the Cix Sky1 audio subsystem (AUDSS),
UltraRISC DP1000, and MediaTek MT8173 MFG_TOP, along with their devicetree
bindings. Si549 support was added to the existing si544 driver.
- New clock and reset support for the Aspeed AST2700 PECI controller and Airoha
EN7523 PCIe PERSTOUT reset lines.
- The clk core gains devm_clk_bulk_get_enable() as the mandatory counterpart to
the existing optional variant, and exports
devm_clk_hw_register_composite_pdata() for modular drivers.
- Tegra gets a proper EMC clock implementation for Tegra114, 48MHz pll_p_out1
support needed for UEFI on Surface2, and the Xilinx clocking-wizard gains PLL
charge pump/lock parameter programming during dynamic reconfiguration.
- Bug fixes for a NULL pointer dereference from uninitialized clk_init_data in
the eswin driver, an IO remap leak in the MediaTek pllfh error path, inverted
gate control for MT8135 devapc_ck, a missing OF node put in tegra124-emc on
registration failure, a prepare reference leak in the palmas driver,
unregistered PLLs on MT6735 probe failure, a missing kasprintf NULL check in
pmc_atom, PCIe warm boot instability in the Airoha EN7523 driver, and a
clocking-wizard clock difference detection bug.
- Various cleanups across tegra, st, and mvebu providers to stop misusing the
consumer clock API, along with other minor fixes and improvements.
Signed-off-by: Brian Masney <bmasney@redhat.com>
* tag 'clk-misc-round-two-for-v7.3' of ssh://github.com/masneyb/linux: (45 commits)
clk: tegra: set up proper EMC clock implementation for Tegra114
clk: clocking-wizard: remove 20kHz restriction
clk: clocking-wizard: optimize clock search
clk: clocking-wizard: fix clock difference detection
clk: mediatek: mt8135: Fix inverted gate control for devapc_ck
clk: clocking-wizard: Program PLL CP/RES and lock parameters on reconfig
clk: tegra: support 48MHz clock for pll_p_out1
clk: aspeed: add AST2700 PECI clock
dt-bindings: clock: ast2700: add PECI clock
clk: mediatek: Add mt8173-mfgtop driver
dt-bindings: clock: mediatek: Add mt8173 mfgtop
clk: tegra: clean-up simple provider misuse of the consumer API
clk: st: clean-up simple provider misuse of the consumer API
clk: mvebu: clean-up simple provider misuse of the consumer API
clk: remove conditional return with no effect
clk: Add devm_clk_bulk_get_enable()
clk: en7523: add support for dedicated PCIe PERSTOUT reset
dt-bindings: clock: airoha: Add additional reset for PCIe PERSTOUT
arm64: dts: cix: sky1: add audss cru
reset: cix: add sky1 audss auxiliary reset driver
...
Diffstat (limited to 'drivers/reset')
| -rw-r--r-- | drivers/reset/Kconfig | 13 | ||||
| -rw-r--r-- | drivers/reset/Makefile | 1 | ||||
| -rw-r--r-- | drivers/reset/reset-sky1-audss.c | 127 |
3 files changed, 141 insertions, 0 deletions
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index f63e89ed6a4e..3168ab1eea88 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -311,6 +311,19 @@ config RESET_SKY1 help This enables the reset controller for Cix Sky1. +config RESET_SKY1_AUDSS + tristate "Cix Sky1 Audio Subsystem reset controller" + depends on ARCH_CIX || COMPILE_TEST + select AUXILIARY_BUS + default CLK_SKY1_AUDSS + help + Support for block-level software reset lines in the Cix Sky1 + Audio Subsystem (AUDSS) Clock and Reset Unit. Sixteen reset + outputs for audio peripherals are controlled through the CRU + register map. The driver binds as an auxiliary device from + the AUDSS clock driver. Say M or Y here if you want to build + this driver. + config RESET_SOCFPGA bool "SoCFPGA Reset Driver" if COMPILE_TEST && (!ARM || !ARCH_INTEL_SOCFPGA) default ARM && ARCH_INTEL_SOCFPGA diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index a75af831ef58..45ad17062462 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -40,6 +40,7 @@ obj-$(CONFIG_RESET_RZV2H_USB2PHY) += reset-rzv2h-usb2phy.o obj-$(CONFIG_RESET_SCMI) += reset-scmi.o obj-$(CONFIG_RESET_SIMPLE) += reset-simple.o obj-$(CONFIG_RESET_SKY1) += reset-sky1.o +obj-$(CONFIG_RESET_SKY1_AUDSS) += reset-sky1-audss.o obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o obj-$(CONFIG_RESET_SUNPLUS) += reset-sunplus.o obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o diff --git a/drivers/reset/reset-sky1-audss.c b/drivers/reset/reset-sky1-audss.c new file mode 100644 index 000000000000..d9735db681c7 --- /dev/null +++ b/drivers/reset/reset-sky1-audss.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Cix Sky1 Audio Subsystem reset controller driver + * + * Copyright 2026 Cix Technology Group Co., Ltd. + */ + +#include <dt-bindings/reset/cix,sky1-audss-cru.h> + +#include <linux/auxiliary_bus.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/reset-controller.h> + +#define SKY1_RESET_SLEEP_US 50 + +#define AUDSS_SW_RST 0x78 + +struct sky1_audss_reset_map { + unsigned int offset; + unsigned int mask; +}; + +struct sky1_audss_reset { + struct reset_controller_dev rcdev; + struct regmap *regmap; + const struct sky1_audss_reset_map *map; +}; + +static const struct sky1_audss_reset_map sky1_audss_reset_map[] = { + [AUDSS_I2S0_SW_RST] = { AUDSS_SW_RST, BIT(0) }, + [AUDSS_I2S1_SW_RST] = { AUDSS_SW_RST, BIT(1) }, + [AUDSS_I2S2_SW_RST] = { AUDSS_SW_RST, BIT(2) }, + [AUDSS_I2S3_SW_RST] = { AUDSS_SW_RST, BIT(3) }, + [AUDSS_I2S4_SW_RST] = { AUDSS_SW_RST, BIT(4) }, + [AUDSS_I2S5_SW_RST] = { AUDSS_SW_RST, BIT(5) }, + [AUDSS_I2S6_SW_RST] = { AUDSS_SW_RST, BIT(6) }, + [AUDSS_I2S7_SW_RST] = { AUDSS_SW_RST, BIT(7) }, + [AUDSS_I2S8_SW_RST] = { AUDSS_SW_RST, BIT(8) }, + [AUDSS_I2S9_SW_RST] = { AUDSS_SW_RST, BIT(9) }, + [AUDSS_WDT_SW_RST] = { AUDSS_SW_RST, BIT(10) }, + [AUDSS_TIMER_SW_RST] = { AUDSS_SW_RST, BIT(11) }, + [AUDSS_MB0_SW_RST] = { AUDSS_SW_RST, BIT(12) }, + [AUDSS_MB1_SW_RST] = { AUDSS_SW_RST, BIT(13) }, + [AUDSS_HDA_SW_RST] = { AUDSS_SW_RST, BIT(14) }, + [AUDSS_DMAC_SW_RST] = { AUDSS_SW_RST, BIT(15) }, +}; + +static struct sky1_audss_reset *to_sky1_audss_reset(struct reset_controller_dev *rcdev) +{ + return container_of(rcdev, struct sky1_audss_reset, rcdev); +} + +static int sky1_audss_reset_set(struct reset_controller_dev *rcdev, + unsigned long id, bool assert) +{ + struct sky1_audss_reset *priv = to_sky1_audss_reset(rcdev); + const struct sky1_audss_reset_map *signal = &priv->map[id]; + int ret; + + ret = regmap_assign_bits(priv->regmap, signal->offset, + signal->mask, !assert); + if (ret) + return ret; + + fsleep(SKY1_RESET_SLEEP_US); + return 0; +} + +static int sky1_audss_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return sky1_audss_reset_set(rcdev, id, true); +} + +static int sky1_audss_reset_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return sky1_audss_reset_set(rcdev, id, false); +} + +static const struct reset_control_ops sky1_audss_reset_ops = { + .assert = sky1_audss_reset_assert, + .deassert = sky1_audss_reset_deassert, +}; + +static int sky1_audss_reset_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct sky1_audss_reset *priv; + struct device *dev = &adev->dev; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->regmap = dev_get_regmap(dev->parent, NULL); + if (!priv->regmap) + return dev_err_probe(dev, -ENODEV, "failed to get parent regmap\n"); + + priv->map = sky1_audss_reset_map; + priv->rcdev.owner = THIS_MODULE; + priv->rcdev.nr_resets = ARRAY_SIZE(sky1_audss_reset_map); + priv->rcdev.ops = &sky1_audss_reset_ops; + priv->rcdev.of_node = dev->of_node; + priv->rcdev.dev = dev; + + return devm_reset_controller_register(dev, &priv->rcdev); +} + +static const struct auxiliary_device_id sky1_audss_reset_ids[] = { + { .name = "clk_sky1_audss.reset" }, + { } +}; +MODULE_DEVICE_TABLE(auxiliary, sky1_audss_reset_ids); + +static struct auxiliary_driver sky1_audss_reset_driver = { + .probe = sky1_audss_reset_probe, + .id_table = sky1_audss_reset_ids, +}; +module_auxiliary_driver(sky1_audss_reset_driver); + +MODULE_AUTHOR("Joakim Zhang <joakim.zhang@cixtech.com>"); +MODULE_DESCRIPTION("Cix Sky1 Audio Subsystem reset driver"); +MODULE_LICENSE("GPL"); |
