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author | 2022-10-06 11:04:57 -0700 | |
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committer | 2022-10-06 11:04:57 -0700 | |
commit | ff6862c23d2e83d12d1759bf4337d41248fb4dc8 (patch) | |
tree | 36d499d2b2f807cd5c197267272fb310a4b0729a /drivers/soc/tegra/fuse/tegra-apbmisc.c | |
parent | Merge tag 'arm-defconfig-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc (diff) | |
parent | ARM: remove check for CONFIG_DEBUG_LL_SER3 (diff) | |
download | wireguard-linux-ff6862c23d2e83d12d1759bf4337d41248fb4dc8.tar.xz wireguard-linux-ff6862c23d2e83d12d1759bf4337d41248fb4dc8.zip |
Merge tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM driver updates from Arnd Bergmann:
"The drivers branch for 6.1 is a bit larger than for most releases.
Most of the changes come from SoC maintainers for the drivers/soc
subsystem:
- A new driver for error handling on the NVIDIA Tegra 'control
backbone' bus.
- A new driver for Qualcomm LLCC/DDR bandwidth measurement
- New Rockchip rv1126 and rk3588 power domain drivers
- DT binding updates for memory controllers, older Rockchip SoCs,
various Mediatek devices, Qualcomm SCM firmware
- Minor updates to Hisilicon LPC bus, the Allwinner SRAM driver, the
Apple rtkit firmware driver, Tegra firmware
- Minor updates for SoC drivers (Samsung, Mediatek, Renesas, Tegra,
Qualcomm, Broadcom, NXP, ...)
There are also some separate subsystem with downstream maintainers
that merge updates this way:
- Various updates and new drivers in the memory controller subsystem
for Mediatek and Broadcom SoCs
- Small set of changes in preparation to add support for FF-A v1.1
specification later, in the Arm FF-A firmware subsystem
- debugfs support in the PSCI firmware subsystem"
* tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (149 commits)
ARM: remove check for CONFIG_DEBUG_LL_SER3
firmware/psci: Add debugfs support to ease debugging
firmware/psci: Print a warning if PSCI doesn't accept PC mode
dt-bindings: memory: snps,dw-umctl2-ddrc: Extend schema with IRQs/resets/clocks props
dt-bindings: memory: snps,dw-umctl2-ddrc: Replace opencoded numbers with macros
dt-bindings: memory: snps,dw-umctl2-ddrc: Use more descriptive device name
dt-bindings: memory: synopsys,ddrc-ecc: Detach Zynq DDRC controller support
soc: sunxi: sram: Add support for the D1 system control
soc: sunxi: sram: Export the LDO control register
soc: sunxi: sram: Save a pointer to the OF match data
soc: sunxi: sram: Return void from the release function
soc: apple: rtkit: Add apple_rtkit_poll
soc: imx: add i.MX93 media blk ctrl driver
soc: imx: add i.MX93 SRC power domain driver
soc: imx: imx8m-blk-ctrl: Use genpd_xlate_onecell
soc: imx: imx8mp-blk-ctrl: handle PCIe PHY resets
soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl
soc: imx: add i.MX8MP HDMI blk ctrl HDCP/HRV_MWR
soc: imx: add icc paths for i.MX8MP hsio/hdmi blk ctrl
soc: imx: add icc paths for i.MX8MP media blk ctrl
...
Diffstat (limited to 'drivers/soc/tegra/fuse/tegra-apbmisc.c')
-rw-r--r-- | drivers/soc/tegra/fuse/tegra-apbmisc.c | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c index 590c862538d0..3351bd872ab2 100644 --- a/drivers/soc/tegra/fuse/tegra-apbmisc.c +++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c @@ -16,12 +16,16 @@ #define FUSE_SKU_INFO 0x10 +#define ERD_ERR_CONFIG 0x120c +#define ERD_MASK_INBAND_ERR 0x1 + #define PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT 4 #define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG \ (0xf << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT) #define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT \ (0x3 << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT) +static void __iomem *apbmisc_base; static bool long_ram_code; static u32 strapping; static u32 chipid; @@ -93,6 +97,28 @@ u32 tegra_read_ram_code(void) } EXPORT_SYMBOL_GPL(tegra_read_ram_code); +/* + * The function sets ERD(Error Response Disable) bit. + * This allows to mask inband errors and always send an + * OKAY response from CBB to the master which caused error. + */ +int tegra194_miscreg_mask_serror(void) +{ + if (!apbmisc_base) + return -EPROBE_DEFER; + + if (!of_machine_is_compatible("nvidia,tegra194")) { + WARN(1, "Only supported for Tegra194 devices!\n"); + return -EOPNOTSUPP; + } + + writel_relaxed(ERD_MASK_INBAND_ERR, + apbmisc_base + ERD_ERR_CONFIG); + + return 0; +} +EXPORT_SYMBOL(tegra194_miscreg_mask_serror); + static const struct of_device_id apbmisc_match[] __initconst = { { .compatible = "nvidia,tegra20-apbmisc", }, { .compatible = "nvidia,tegra186-misc", }, @@ -134,7 +160,7 @@ void __init tegra_init_revision(void) void __init tegra_init_apbmisc(void) { - void __iomem *apbmisc_base, *strapping_base; + void __iomem *strapping_base; struct resource apbmisc, straps; struct device_node *np; @@ -182,12 +208,12 @@ void __init tegra_init_apbmisc(void) */ if (of_address_to_resource(np, 0, &apbmisc) < 0) { pr_err("failed to get APBMISC registers\n"); - return; + goto put; } if (of_address_to_resource(np, 1, &straps) < 0) { pr_err("failed to get strapping options registers\n"); - return; + goto put; } } @@ -196,7 +222,6 @@ void __init tegra_init_apbmisc(void) pr_err("failed to map APBMISC registers\n"); } else { chipid = readl_relaxed(apbmisc_base + 4); - iounmap(apbmisc_base); } strapping_base = ioremap(straps.start, resource_size(&straps)); @@ -208,4 +233,7 @@ void __init tegra_init_apbmisc(void) } long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code"); + +put: + of_node_put(np); } |