6.6-stable review patch. If anyone has any objections, please let me know.
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From: Amit Pundir amit.pundir@linaro.org
[ Upstream commit f760a4bb5e927a133dcd75f7b69ccae2a331e42c ]
Similar to the earlier fixes meant for sm8x50 and x1e platforms, we have to stop using the shared clk ops for sdm845 QUPs as well.
As Stephen Boyd pointed out in earlier fixes, there wasn't a problem to mark QUP clks shared until we started parking shared RCGs at clk registration time in commit 01a0a6cc8cfd ("clk: qcom: Park shared RCGs upon registration"). Parking at init is actually harmful to the UART when earlycon is used. If the device is pumping out data while the frequency changes and we see garbage on the serial console until the driver can probe and actually set a proper frequency.
This patch reverts the QUP clk sharing ops part of commit 06391eddb60a ("clk: qcom: Add Global Clock controller (GCC) driver for SDM845"), so that the QUPs on sdm845 don't get parked during clk registration and break UART operations.
Fixes: 01a0a6cc8cfd ("clk: qcom: Park shared RCGs upon registration") Signed-off-by: Amit Pundir amit.pundir@linaro.org Link: https://lore.kernel.org/r/20241209174912.2526928-1-amit.pundir@linaro.org Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/qcom/gcc-sdm845.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/drivers/clk/qcom/gcc-sdm845.c b/drivers/clk/qcom/gcc-sdm845.c index ea4c3bf4fb9bf..1a23bfd9356d5 100644 --- a/drivers/clk/qcom/gcc-sdm845.c +++ b/drivers/clk/qcom/gcc-sdm845.c @@ -454,7 +454,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s0_clk_src_init = { .name = "gcc_qupv3_wrap0_s0_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s0_clk_src = { @@ -470,7 +470,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s1_clk_src_init = { .name = "gcc_qupv3_wrap0_s1_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s1_clk_src = { @@ -486,7 +486,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s2_clk_src_init = { .name = "gcc_qupv3_wrap0_s2_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s2_clk_src = { @@ -502,7 +502,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s3_clk_src_init = { .name = "gcc_qupv3_wrap0_s3_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s3_clk_src = { @@ -518,7 +518,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s4_clk_src_init = { .name = "gcc_qupv3_wrap0_s4_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s4_clk_src = { @@ -534,7 +534,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s5_clk_src_init = { .name = "gcc_qupv3_wrap0_s5_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s5_clk_src = { @@ -550,7 +550,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s6_clk_src_init = { .name = "gcc_qupv3_wrap0_s6_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s6_clk_src = { @@ -566,7 +566,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s7_clk_src_init = { .name = "gcc_qupv3_wrap0_s7_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap0_s7_clk_src = { @@ -582,7 +582,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s0_clk_src_init = { .name = "gcc_qupv3_wrap1_s0_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s0_clk_src = { @@ -598,7 +598,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s1_clk_src_init = { .name = "gcc_qupv3_wrap1_s1_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s1_clk_src = { @@ -614,7 +614,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s2_clk_src_init = { .name = "gcc_qupv3_wrap1_s2_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s2_clk_src = { @@ -630,7 +630,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s3_clk_src_init = { .name = "gcc_qupv3_wrap1_s3_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s3_clk_src = { @@ -646,7 +646,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s4_clk_src_init = { .name = "gcc_qupv3_wrap1_s4_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s4_clk_src = { @@ -662,7 +662,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s5_clk_src_init = { .name = "gcc_qupv3_wrap1_s5_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s5_clk_src = { @@ -678,7 +678,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s6_clk_src_init = { .name = "gcc_qupv3_wrap1_s6_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s6_clk_src = { @@ -694,7 +694,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s7_clk_src_init = { .name = "gcc_qupv3_wrap1_s7_clk_src", .parent_data = gcc_parent_data_0, .num_parents = ARRAY_SIZE(gcc_parent_data_0), - .ops = &clk_rcg2_shared_ops, + .ops = &clk_rcg2_ops, };
static struct clk_rcg2 gcc_qupv3_wrap1_s7_clk_src = {