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hw/misc: Add NPCM7xx Clock Controller device model

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Enough functionality to boot the Linux kernel has been implemented. This
includes:

  - Correct power-on reset values so the various clock rates can be
    accurately calculated.
  - Clock enables stick around when written.

In addition, a best effort attempt to implement SECCNT and CNTR25M was
made even though I don't think the kernel needs them.

Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Message-id: 20200911052101.2602693-3-hskinnemoen@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Havard Skinnemoen 2020-09-10 22:20:49 -07:00 • committed by Peter Maydell
parent e5a7ba8788
commit e331f79eb8
4 changed files with 319 additions and 0 deletions
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1
hw/misc/meson.build
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@ -57,6 +57,7 @@ softmmu_ss.add(when: 'CONFIG_IMX', if_true: files(
softmmu_ss.add(when: 'CONFIG_MILKYMIST', if_true: files('milkymist-hpdmc.c', 'milkymist-pfpu.c'))
softmmu_ss.add(when: 'CONFIG_MAINSTONE', if_true: files('mst_fpga.c'))
softmmu_ss.add(when: 'CONFIG_NPCM7XX', if_true: files(
'npcm7xx_clk.c',
'npcm7xx_gcr.c',
))
softmmu_ss.add(when: 'CONFIG_OMAP', if_true: files(