* [PATCH] ARM: qcom: Disable i2c device on gsbi4 for ipq806x
@ 2015-08-18 22:21 Mathieu Olivari
0 siblings, 0 replies; 3+ messages in thread
From: Mathieu Olivari @ 2015-08-18 22:21 UTC (permalink / raw)
To: sboyd, agross, rnayak, architt
Cc: robh+dt, pawel.moll, mark.rutland, ijc+devicetree, galak, linux,
mturquette, mathieu, mturquette, georgi.djakov, devicetree,
linux-arm-kernel, linux-kernel, linux-clk
Disable the i2c device on gsbi4 and mark gsbi4_h and gsbi4_qup clks as
unused. If they are enabled, clock framework will turn them off at end
of probe. On ipq806x by design gsbi4_qup, gsbi4_h clks and i2c on gsbi4
are meant for RPM usage. So turning them off in kernel is incorrect.
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
---
arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 9 ---------
drivers/clk/qcom/gcc-ipq806x.c | 6 +++---
2 files changed, 3 insertions(+), 12 deletions(-)
diff --git a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
index b08907a..36e2b04 100644
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
@@ -46,15 +46,6 @@
serial@16340000 {
status = "ok";
};
-
- i2c4: i2c@16380000 {
- status = "ok";
-
- clock-frequency = <200000>;
-
- pinctrl-0 = <&i2c4_pins>;
- pinctrl-names = "default";
- };
};
gsbi5: gsbi@1a200000 {
diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
index 5639699..eb4065e 100644
--- a/drivers/clk/qcom/gcc-ipq806x.c
+++ b/drivers/clk/qcom/gcc-ipq806x.c
@@ -809,7 +809,7 @@ static struct clk_rcg gsbi6_qup_src = {
.parent_names = gcc_pxo_pll8,
.num_parents = 2,
.ops = &clk_rcg_ops,
- .flags = CLK_SET_PARENT_GATE,
+ .flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
},
},
};
@@ -874,7 +874,7 @@ static struct clk_branch gsbi7_qup_clk = {
.parent_names = (const char *[]){ "gsbi7_qup_src" },
.num_parents = 1,
.ops = &clk_branch_ops,
- .flags = CLK_SET_RATE_PARENT,
+ .flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
},
},
};
@@ -922,7 +922,7 @@ static struct clk_branch gsbi4_h_clk = {
.hw.init = &(struct clk_init_data){
.name = "gsbi4_h_clk",
.ops = &clk_branch_ops,
- .flags = CLK_IS_ROOT,
+ .flags = CLK_IS_ROOT | CLK_IGNORE_UNUSED,
},
},
};
--
2.1.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH] ARM: qcom: Disable i2c device on gsbi4 for ipq806x
@ 2020-03-13 19:58 Ansuel Smith
2020-03-13 20:36 ` Stephen Boyd
0 siblings, 1 reply; 3+ messages in thread
From: Ansuel Smith @ 2020-03-13 19:58 UTC (permalink / raw)
To: agross
Cc: Ansuel Smith, Mathieu Olivari, Bjorn Andersson, Rob Herring,
Mark Rutland, Michael Turquette, Stephen Boyd, linux-arm-msm,
devicetree, linux-kernel, linux-clk
Disable the i2c device on gsbi4 and mark gsbi4_h and gsbi4_qup clks as
unused. If they are enabled, clock framework will turn them off at end
of probe. On ipq806x by design gsbi4_qup, gsbi4_h clks and i2c on gsbi4
are meant for RPM usage. So turning them off in kernel is incorrect.
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 9 ---------
drivers/clk/qcom/gcc-ipq806x.c | 5 +++--
2 files changed, 3 insertions(+), 11 deletions(-)
diff --git a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
index 554c65e7aa0e..580aec63030d 100644
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
@@ -21,14 +21,5 @@ mux {
};
};
};
-
- gsbi@16300000 {
- i2c@16380000 {
- status = "ok";
- clock-frequency = <200000>;
- pinctrl-0 = <&i2c4_pins>;
- pinctrl-names = "default";
- };
- };
};
};
diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
index b0eee0903807..75706807e6cf 100644
--- a/drivers/clk/qcom/gcc-ipq806x.c
+++ b/drivers/clk/qcom/gcc-ipq806x.c
@@ -782,7 +782,7 @@ static struct clk_rcg gsbi4_qup_src = {
.parent_names = gcc_pxo_pll8,
.num_parents = 2,
.ops = &clk_rcg_ops,
- .flags = CLK_SET_PARENT_GATE,
+ .flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
},
},
};
@@ -798,7 +798,7 @@ static struct clk_branch gsbi4_qup_clk = {
.parent_names = (const char *[]){ "gsbi4_qup_src" },
.num_parents = 1,
.ops = &clk_branch_ops,
- .flags = CLK_SET_RATE_PARENT,
+ .flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
},
},
};
@@ -991,6 +991,7 @@ static struct clk_branch gsbi4_h_clk = {
.hw.init = &(struct clk_init_data){
.name = "gsbi4_h_clk",
.ops = &clk_branch_ops,
+ .flags = CLK_IGNORE_UNUSED,
},
},
};
--
2.25.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] ARM: qcom: Disable i2c device on gsbi4 for ipq806x
2020-03-13 19:58 Ansuel Smith
@ 2020-03-13 20:36 ` Stephen Boyd
0 siblings, 0 replies; 3+ messages in thread
From: Stephen Boyd @ 2020-03-13 20:36 UTC (permalink / raw)
To: Ansuel Smith, agross
Cc: Ansuel Smith, Mathieu Olivari, Bjorn Andersson, Rob Herring,
Mark Rutland, Michael Turquette, linux-arm-msm, devicetree,
linux-kernel, linux-clk
Quoting Ansuel Smith (2020-03-13 12:58:16)
> diff --git a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
> index 554c65e7aa0e..580aec63030d 100644
> --- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
> +++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
> @@ -21,14 +21,5 @@ mux {
> };
> };
> };
> -
> - gsbi@16300000 {
> - i2c@16380000 {
> - status = "ok";
> - clock-frequency = <200000>;
> - pinctrl-0 = <&i2c4_pins>;
> - pinctrl-names = "default";
> - };
> - };
> };
> };
> diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
> index b0eee0903807..75706807e6cf 100644
> --- a/drivers/clk/qcom/gcc-ipq806x.c
> +++ b/drivers/clk/qcom/gcc-ipq806x.c
> @@ -782,7 +782,7 @@ static struct clk_rcg gsbi4_qup_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_PARENT_GATE,
> + .flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
A better solution is to use the protected-clocks property so we don't
try to touch these clks at all on this device. So this whole patch can
be routed through arm-soc and remove the i2c node and add some dt
property to the gcc node.
> },
> },
> };
^ permalink raw reply [flat|nested] 3+ messages in thread
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