CONFIG_ARM_SCMI_TRANSPORT_SMC_ATOMIC_ENABLE: Enable atomic mode support for SCMI SMC transport

General informations

The Linux kernel configuration item CONFIG_ARM_SCMI_TRANSPORT_SMC_ATOMIC_ENABLE:

• prompt: Enable atomic mode support for SCMI SMC transport
• type: bool
• depends on: CONFIG_ARM_SCMI_TRANSPORT_SMC
• defined in drivers/firmware/arm_scmi/Kconfig
• found in Linux kernels: 5.18–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Enable support of atomic operation for SCMI SMC based transport.

If you want the SCMI SMC based transport to operate in atomic mode, avoiding any kind of sleeping behaviour for selected transactions on the TX path, answer Y. Enabling atomic mode operations allows any SCMI driver using this transport to optionally ask for atomic SCMI transactions and operate in atomic context too, at the price of using a number of busy-waiting primitives all over instead. If unsure say N.

Hardware

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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