From: Dmitry Osipenko digetx@gmail.com
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
--- drivers/clk/tegra/clk-pll.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- 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 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);