Messages in this thread | | | From | peng.fan@nxp ... | Subject | [PATCH RESEND v3 0/4] clk: imx: imx8m: fix a53 cpu clock | Date | Wed, 19 Feb 2020 18:17:05 +0800 |
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From: Peng Fan <peng.fan@nxp.com>
V3: Rebased to Shawn's for-next branch Typo fix
V2: Fix i.MX8MP build Update cover letter, i.MX7D not have this issue
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.
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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