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(parent: dd29cee) | patch
spi: aspeed: Clock frequency adjustment support
authorChin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Fri, 19 Aug 2022 09:01:14 +0000 (17:01 +0800)
committerTom Rini <trini@konsulko.com>
Tue, 13 Sep 2022 16:08:41 +0000 (12:08 -0400)
commit9a163720237e5e0d9989e4411f70b61414f3711e
treeb2390b776124ceb651c7899f6a9d3e277ae5a57ctree | snapshot
parentdd29cee8d83588e631bbd87f1d6cbf9b2fb960b8commit | diff
spi: aspeed: Clock frequency adjustment support

Driver can configure the SPI clock frequnecy to the
target value of "spi-max-frequency" property in
the device tree. The frequency is divided from HCLK,
200MHz. Usually, the ASPEED SPI clock frequency range
is between 12.5MHz and 100MHz. On AST2600, the lowest
SPI clock frequency can be about 780kHz.

Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
drivers/spi/spi-aspeed-smc.c diff | blob | history
Domain: System / Kernel;