Re: [PATCH 4/4] arm64: dts: ti: k3-am642-evm/sk: Reserve some on-chip SRAM for R5Fs
From: Nishanth Menon <nm@ti.com>
Date: 2021-06-15 19:42:20
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On 13:05-20210614, Suman Anna wrote:
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+&oc_sram { + main_r5fss0_core0_sram: r5f-sram@40000 { + reg = <0x40000 0x40000>; + }; + + main_r5fss0_core1_sram: r5f-sram@80000 { + reg = <0x80000 0x40000>; + }; + + main_r5fss1_core0_sram: r5f-sram@c0000 { + reg = <0xc0000 0x40000>; + }; + + main_r5fss1_core1_sram: r5f-sram@100000 { + reg = <0x100000 0x40000>; + }; +};These addresses are currently in sync with the corresponding firmware linker map files. Any changes needed here should also be aligned and updated with all the firmwares then. Nishanth, How about dropping this patch until we conclude the discussion and picking up the rest?
Lets skip this patch for this merge cycle - aka stay compatible with the previous reference binaries that do not use OCSRAM (aka not pick up 4x latency improvement), till we figure out a future looking and relatively stable memory map that considers: a) R5s IPC RAM + future usage: b) M4F IPC RAM c) ICSSG buffer RAMs -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel