clk: qcom: gcc-sdm845: Add missing flag to votable GDSCs

Message ID 20191126153437.11808-1-georgi.djakov@linaro.org
State Accepted
Commit 5e82548e26ef62e257dc2ff37c11acb5eb72728e
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Series
  • clk: qcom: gcc-sdm845: Add missing flag to votable GDSCs
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Commit Message

Georgi Djakov Nov. 26, 2019, 3:34 p.m.
On sdm845 devices, during boot we see the following warnings (unless we
have added 'pd_ignore_unused' to the kernel command line):
	hlos1_vote_mmnoc_mmu_tbu_sf_gdsc status stuck at 'on'
	hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc status stuck at 'on'
	hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc status stuck at 'on'
	hlos1_vote_aggre_noc_mmu_tbu2_gdsc status stuck at 'on'
	hlos1_vote_aggre_noc_mmu_tbu1_gdsc status stuck at 'on'
	hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc status stuck at 'on'
	hlos1_vote_aggre_noc_mmu_audio_tbu_gdsc status stuck at 'on'

As the name of these GDSCs suggests, they are "votable" and in downstream
DT, they all have the property "qcom,no-status-check-on-disable", which
means that we should not poll the status bit when we disable them.

Luckily the VOTABLE flag already exists and it does exactly what we need,
so let's make use of it to make the warnings disappear.

Fixes: 06391eddb60a ("clk: qcom: Add Global Clock controller (GCC) driver for SDM845")
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>

---
 drivers/clk/qcom/gcc-sdm845.c | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Rob Clark Nov. 26, 2019, 6:11 p.m. | #1
On Tue, Nov 26, 2019 at 7:34 AM Georgi Djakov <georgi.djakov@linaro.org> wrote:
>

> On sdm845 devices, during boot we see the following warnings (unless we

> have added 'pd_ignore_unused' to the kernel command line):

>         hlos1_vote_mmnoc_mmu_tbu_sf_gdsc status stuck at 'on'

>         hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc status stuck at 'on'

>         hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_tbu2_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_tbu1_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_audio_tbu_gdsc status stuck at 'on'

>

> As the name of these GDSCs suggests, they are "votable" and in downstream

> DT, they all have the property "qcom,no-status-check-on-disable", which

> means that we should not poll the status bit when we disable them.

>

> Luckily the VOTABLE flag already exists and it does exactly what we need,

> so let's make use of it to make the warnings disappear.

>

> Fixes: 06391eddb60a ("clk: qcom: Add Global Clock controller (GCC) driver for SDM845")

> Reported-by: Rob Clark <robdclark@gmail.com>

> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>


Tested-by: Rob Clark <robdclark@gmail.com>


(on yoga c630)

> ---

>  drivers/clk/qcom/gcc-sdm845.c | 7 +++++++

>  1 file changed, 7 insertions(+)

>

> diff --git a/drivers/clk/qcom/gcc-sdm845.c b/drivers/clk/qcom/gcc-sdm845.c

> index 95be125c3bdd..56d22dd225c9 100644

> --- a/drivers/clk/qcom/gcc-sdm845.c

> +++ b/drivers/clk/qcom/gcc-sdm845.c

> @@ -3255,6 +3255,7 @@ static struct gdsc hlos1_vote_aggre_noc_mmu_audio_tbu_gdsc = {

>                 .name = "hlos1_vote_aggre_noc_mmu_audio_tbu_gdsc",

>         },

>         .pwrsts = PWRSTS_OFF_ON,

> +       .flags = VOTABLE,

>  };

>

>  static struct gdsc hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc = {

> @@ -3263,6 +3264,7 @@ static struct gdsc hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc = {

>                 .name = "hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc",

>         },

>         .pwrsts = PWRSTS_OFF_ON,

> +       .flags = VOTABLE,

>  };

>

>  static struct gdsc hlos1_vote_aggre_noc_mmu_tbu1_gdsc = {

> @@ -3271,6 +3273,7 @@ static struct gdsc hlos1_vote_aggre_noc_mmu_tbu1_gdsc = {

>                 .name = "hlos1_vote_aggre_noc_mmu_tbu1_gdsc",

>         },

>         .pwrsts = PWRSTS_OFF_ON,

> +       .flags = VOTABLE,

>  };

>

>  static struct gdsc hlos1_vote_aggre_noc_mmu_tbu2_gdsc = {

> @@ -3279,6 +3282,7 @@ static struct gdsc hlos1_vote_aggre_noc_mmu_tbu2_gdsc = {

>                 .name = "hlos1_vote_aggre_noc_mmu_tbu2_gdsc",

>         },

>         .pwrsts = PWRSTS_OFF_ON,

> +       .flags = VOTABLE,

>  };

>

>  static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc = {

> @@ -3287,6 +3291,7 @@ static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc = {

>                 .name = "hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc",

>         },

>         .pwrsts = PWRSTS_OFF_ON,

> +       .flags = VOTABLE,

>  };

>

>  static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc = {

> @@ -3295,6 +3300,7 @@ static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc = {

>                 .name = "hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc",

>         },

>         .pwrsts = PWRSTS_OFF_ON,

> +       .flags = VOTABLE,

>  };

>

>  static struct gdsc hlos1_vote_mmnoc_mmu_tbu_sf_gdsc = {

> @@ -3303,6 +3309,7 @@ static struct gdsc hlos1_vote_mmnoc_mmu_tbu_sf_gdsc = {

>                 .name = "hlos1_vote_mmnoc_mmu_tbu_sf_gdsc",

>         },

>         .pwrsts = PWRSTS_OFF_ON,

> +       .flags = VOTABLE,

>  };

>

>  static struct clk_regmap *gcc_sdm845_clocks[] = {
Stephen Boyd Dec. 13, 2019, 2:59 a.m. | #2
Quoting Georgi Djakov (2019-11-26 07:34:37)
> On sdm845 devices, during boot we see the following warnings (unless we

> have added 'pd_ignore_unused' to the kernel command line):

>         hlos1_vote_mmnoc_mmu_tbu_sf_gdsc status stuck at 'on'

>         hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc status stuck at 'on'

>         hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_tbu2_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_tbu1_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc status stuck at 'on'

>         hlos1_vote_aggre_noc_mmu_audio_tbu_gdsc status stuck at 'on'

> 

> As the name of these GDSCs suggests, they are "votable" and in downstream

> DT, they all have the property "qcom,no-status-check-on-disable", which

> means that we should not poll the status bit when we disable them.

> 

> Luckily the VOTABLE flag already exists and it does exactly what we need,

> so let's make use of it to make the warnings disappear.

> 

> Fixes: 06391eddb60a ("clk: qcom: Add Global Clock controller (GCC) driver for SDM845")

> Reported-by: Rob Clark <robdclark@gmail.com>

> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>


Taniya, can you ack/review this change?

Patch

diff --git a/drivers/clk/qcom/gcc-sdm845.c b/drivers/clk/qcom/gcc-sdm845.c
index 95be125c3bdd..56d22dd225c9 100644
--- a/drivers/clk/qcom/gcc-sdm845.c
+++ b/drivers/clk/qcom/gcc-sdm845.c
@@ -3255,6 +3255,7 @@  static struct gdsc hlos1_vote_aggre_noc_mmu_audio_tbu_gdsc = {
 		.name = "hlos1_vote_aggre_noc_mmu_audio_tbu_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.flags = VOTABLE,
 };
 
 static struct gdsc hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc = {
@@ -3263,6 +3264,7 @@  static struct gdsc hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc = {
 		.name = "hlos1_vote_aggre_noc_mmu_pcie_tbu_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.flags = VOTABLE,
 };
 
 static struct gdsc hlos1_vote_aggre_noc_mmu_tbu1_gdsc = {
@@ -3271,6 +3273,7 @@  static struct gdsc hlos1_vote_aggre_noc_mmu_tbu1_gdsc = {
 		.name = "hlos1_vote_aggre_noc_mmu_tbu1_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.flags = VOTABLE,
 };
 
 static struct gdsc hlos1_vote_aggre_noc_mmu_tbu2_gdsc = {
@@ -3279,6 +3282,7 @@  static struct gdsc hlos1_vote_aggre_noc_mmu_tbu2_gdsc = {
 		.name = "hlos1_vote_aggre_noc_mmu_tbu2_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.flags = VOTABLE,
 };
 
 static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc = {
@@ -3287,6 +3291,7 @@  static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc = {
 		.name = "hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.flags = VOTABLE,
 };
 
 static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc = {
@@ -3295,6 +3300,7 @@  static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc = {
 		.name = "hlos1_vote_mmnoc_mmu_tbu_hf1_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.flags = VOTABLE,
 };
 
 static struct gdsc hlos1_vote_mmnoc_mmu_tbu_sf_gdsc = {
@@ -3303,6 +3309,7 @@  static struct gdsc hlos1_vote_mmnoc_mmu_tbu_sf_gdsc = {
 		.name = "hlos1_vote_mmnoc_mmu_tbu_sf_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
+	.flags = VOTABLE,
 };
 
 static struct clk_regmap *gcc_sdm845_clocks[] = {