arm64: dts: imx8mp: Fix TC9595 input clock on DH i.MX8M Plus DHCOM SoM

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[ Upstream commit c03984d43a ]

The IMX8MP_CLK_CLKOUT2 supplies the TC9595 bridge with 13 MHz reference
clock. The IMX8MP_CLK_CLKOUT2 is supplied from IMX8MP_AUDIO_PLL2_OUT.
The IMX8MP_CLK_CLKOUT2 operates only as a power-of-two divider, and the
current 156 MHz is not power-of-two divisible to achieve 13 MHz.

To achieve 13 MHz output from IMX8MP_CLK_CLKOUT2, set IMX8MP_AUDIO_PLL2_OUT
to 208 MHz, because 208 MHz / 16 = 13 MHz.

Fixes: 20d0b83e71 ("arm64: dts: imx8mp: Add TC9595 bridge on DH electronics i.MX8M Plus DHCOM")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Marek Vasut 2024-06-15 16:00:43 +08:00 • committed by Greg Kroah-Hartman

parent 332af18d1a

commit 625c4fda11

1 changed files with 1 additions and 1 deletions

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arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi

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