Thread (17 messages) 17 messages, 3 authors, 2021-06-30

Re: [PATCH v2 2/6] clk: Support bypassing dividers

From: Stephen Boyd <sboyd@kernel.org>
Date: 2021-06-28 02:49:40
Also in: linux-clk, linux-mips, lkml

Quoting Paul Cercueil (2021-05-30 09:49:19)
When a clock is declared as both CGU_CLK_DIV and CGU_CLK_MUX, the CGU
code expects the mux to be applied first, the divider second.

On the JZ4760, and maybe on some other SoCs, some clocks also have a mux
setting and a divider, but the divider is not applied to all parents
selectable from the mux.

This could be solved by creating two clocks, one with CGU_CLK_DIV and
one with CGU_CLK_MUX, but that would increase the number of clocks.

Instead, add a 8-bit mask to CGU_CLK_DIV clocks. If the bit
corresponding to the parent clock's index is set, the divider is
bypassed.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
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Applied to clk-next
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