clk: tegra: Fix PLLM programming on Tegra124+ when PMC overrides divider

commit 40db569d6769ffa3864fd1b89616b1a7323568a8 upstream.

There are wrongly set parenthesis in the code that are resulting in a
wrong configuration being programmed for PLLM. The original fix was made
by Danny Huang in the downstream kernel. The patch was tested on Nyan Big
Tegra124 chromebook, PLLM rate changing works correctly now and system
doesn't lock up after changing the PLLM rate due to EMC scaling.

Cc: <stable@vger.kernel.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index d6d4ecb88e945e6a8c23ecbd12081d3e8616e10a..311f6e62264f964da21aa2b5b90253c2a798f18b 100644 (file)
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -492,8 +492,8 @@ static void _update_pll_mnp(struct tegra_clk_pll *pll,
                pll_override_writel(val, params->pmc_divp_reg, pll);
 
                val = pll_override_readl(params->pmc_divnm_reg, pll);
-               val &= ~(divm_mask(pll) << div_nmp->override_divm_shift) |
-                       ~(divn_mask(pll) << div_nmp->override_divn_shift);
+               val &= ~((divm_mask(pll) << div_nmp->override_divm_shift) |
+                       (divn_mask(pll) << div_nmp->override_divn_shift));
                val |= (cfg->m << div_nmp->override_divm_shift) |
                        (cfg->n << div_nmp->override_divn_shift);
                pll_override_writel(val, params->pmc_divnm_reg, pll);