From 5278acc4418bad18ed677952ca7cd56ce312a87d Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Wed, 20 May 2020 00:41:40 +0200 Subject: [PATCH] clk: mmp: frac: Allow setting bits other than the numerator/denominator For the I2S fractional clocks, there are more bits that need to be set for the clock to run. Their actual meaning is unknown. Signed-off-by: Lubomir Rintel Link: https://lkml.kernel.org/r/20200519224151.2074597-3-lkundrak@v3.sk Signed-off-by: Stephen Boyd --- drivers/clk/mmp/clk-frac.c | 3 +++ drivers/clk/mmp/clk.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/clk/mmp/clk-frac.c b/drivers/clk/mmp/clk-frac.c index ed9928f..48f592b 100644 --- a/drivers/clk/mmp/clk-frac.c +++ b/drivers/clk/mmp/clk-frac.c @@ -148,7 +148,10 @@ static int clk_factor_init(struct clk_hw *hw) val &= ~(masks->den_mask << masks->den_shift); val |= (factor->ftbl[0].den & masks->den_mask) << masks->den_shift; + } + if (!(val & masks->enable_mask) || i >= factor->ftbl_cnt) { + val |= masks->enable_mask; writel(val, factor->base); } diff --git a/drivers/clk/mmp/clk.h b/drivers/clk/mmp/clk.h index 971b4d6..0efd5b0 100644 --- a/drivers/clk/mmp/clk.h +++ b/drivers/clk/mmp/clk.h @@ -16,6 +16,7 @@ struct mmp_clk_factor_masks { unsigned int den_mask; unsigned int num_shift; unsigned int den_shift; + unsigned int enable_mask; }; struct mmp_clk_factor_tbl { -- 2.7.4