Messages in this thread | | | From | Peng Fan <> | Subject | [PATCH 0/4] clk: imx: imx8m: fix a53 cpu clock | Date | Tue, 14 Jan 2020 03:17:44 +0000 |
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From: Peng Fan <peng.fan@nxp.com>
The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root signoff timing is 1Ghz, however the A53 core which sources from CCM root could run above 1GHz which voilates the CCM.
There is a CORE_SEL slice before A53 core, we need configure the CORE_SEL slice source from ARM PLL, not A53 CCM clk root.
The A53 CCM clk root should only be used when need to change ARM PLL frequency.
The i.MX7D A7 CCM should also be fixed, I'll write a patch later.
Peng Fan (4): clk: imx: imx8mq: fix a53 cpu clock clk: imx: imx8mm: fix a53 cpu clock clk: imx: imx8mn: fix a53 cpu clock clk: imx: imx8mp: fix a53 cpu clock
drivers/clk/imx/clk-imx8mm.c | 16 ++++++++++++---- drivers/clk/imx/clk-imx8mn.c | 16 ++++++++++++---- drivers/clk/imx/clk-imx8mp.c | 16 ++++++++++++---- drivers/clk/imx/clk-imx8mq.c | 16 ++++++++++++---- include/dt-bindings/clock/imx8mm-clock.h | 4 +++- include/dt-bindings/clock/imx8mn-clock.h | 4 +++- include/dt-bindings/clock/imx8mp-clock.h | 3 ++- include/dt-bindings/clock/imx8mq-clock.h | 4 +++- 8 files changed, 59 insertions(+), 20 deletions(-)
-- 2.16.4
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