Thread (12 messages) 12 messages, 5 authors, 2022-06-01

Re: [PATCH v5 2/4] mtd: rawnand: meson: fix the clock

From: Kevin Hilman <khilman@baylibre.com>
Date: 2022-05-26 16:28:57
Also in: linux-amlogic, lkml

Hi Liang,

Liang Yang [off-list ref] writes:
EMMC and NAND have the same clock control register named 'SD_EMMC_CLOCK'
which is defined in EMMC port internally. bit0~5 of 'SD_EMMC_CLOCK' is
the divider and bit6~7 is the mux for fix pll and xtal. At the beginning,
a common MMC and NAND sub-clock was discussed and planed to be implemented
as NFC clock provider, but now this series of patches of a common MMC and
NAND sub-clock are never being accepted.  the reasons for giving up are:
1. EMMC and NAND, which are mutually exclusive anyway
2. coupling the EMMC and NAND.
3. it seems that a common MMC and NAND sub-clock is over engineered.
and let us see the link fot more information:
https://lore.kernel.org/all/20220121074508.42168-5-liang.yang@amlogic.com (local)
so The meson nfc can't work now, let us rework the clock.

Signed-off-by: Liang Yang <liang.yang@amlogic.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>

Thank you for your persistence in working on multiple iterations of this
until we came to a final agreement.

Kevin

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