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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2022-06-14 11:15:56 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-06-17 08:25:43 +0200 |
| commit | e31495eeb3a9e179a736e67012b17cc4a7bfc10b (patch) | |
| tree | fef12e158bd416c580e0faa8375f31e80b767407 /arch | |
| parent | c50731ebca48c6216b183bd1e0272dd75033ba41 (diff) | |
| download | barebox-e31495eeb3a9e179a736e67012b17cc4a7bfc10b.tar.gz barebox-e31495eeb3a9e179a736e67012b17cc4a7bfc10b.tar.xz | |
dma: add dma_sync nop stubs for PBL
We can implement dma_sync functions as compiler barriers when we are
certain that the buffers are in coherent/uncached memory, e.g. because
MMU is only enabled in barebox_arm_entry which hasn't run yet.
This will come in handy when doing mailbox communication in PBL on the
Raspberry Pi.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220614091556.1018102-2-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions