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Groups > linux.kernel > #1175630 > unrolled thread
| Started by | Chanwoo Choi <cw00.choi@samsung.com> |
|---|---|
| First post | 2015-07-02 02:50 +0200 |
| Last post | 2015-07-02 02:50 +0200 |
| Articles | 4 — 1 participant |
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[PATCH v6 0/3] cpufreq: Use cpufreq-dt driver for Exynos3250 Chanwoo Choi <cw00.choi@samsung.com> - 2015-07-02 02:50 +0200
[PATCH v6 1/3] clk: samsung: exynos3250: Add cpu clock configuration data and instaniate cpu clock Chanwoo Choi <cw00.choi@samsung.com> - 2015-07-02 02:50 +0200
[PATCH v6 3/3] ARM: exynos: Add exynos3250 compatible to use generic cpufreq driver Chanwoo Choi <cw00.choi@samsung.com> - 2015-07-02 02:50 +0200
[PATCH v6 2/3] ARM: dts: Add CPU OPP and regulator supply property for Exynos3250 Chanwoo Choi <cw00.choi@samsung.com> - 2015-07-02 02:50 +0200
| From | Chanwoo Choi <cw00.choi@samsung.com> |
|---|---|
| Date | 2015-07-02 02:50 +0200 |
| Subject | [PATCH v6 0/3] cpufreq: Use cpufreq-dt driver for Exynos3250 |
| Message-ID | <pHARr-3Yx-1@gated-at.bofh.it> |
This patchset use cpufreq-dt driver to support Exynos3250 cpufreq and tested it on Exynos3250-based Rinato board. Depends on: - next-20150701 tag (master branch) of linux-next kernel tree - This patch-set is based on Exynos5250 patch-set[1] because two patch-set modify the 'arch/arm/mach-exynos/exynos.c' to add the compatible string. [1] https://lkml.org/lkml/2015/6/29/361 : [PATCH v2 0/4] cpufreq: use generic cpufreq drivers for Exynos5250 platform Changes from v5: (https://lkml.org/lkml/2015/7/1/324) - Reorder the cpu dt node in exynos3250-rinato/monk.dts alpabetically. - Add reviewed-by tag of Krzysztof Kozlowski <k.kozlowski@samsung.com> Changes from v4: (https://lkml.org/lkml/2014/10/20/215) - Rebased on latest linux-next git repository. - Remove unnecessary divider clock flag from divider of DIV_CPU0/DIV_CPU1 register Changes from v3: - This patchset is based on 3.18-rc1 with new patchset[3] of Thomas Abraham [3] [PATCH v11 0/6] cpufreq: use generic cpufreq drivers for exynos platforms - http://www.spinics.net/lists/arm-kernel/msg370412.html Changes from v2: - Rebased on new patchset of Thomas Abraham and for-next branch of samsunc-clk.git of Tomasz Figa Changes from v1: - Rebased on new patchset[1] by Thomas Abraham [1] [PATCH v10 0/6] cpufreq: use generic cpufreq drivers for exynos platforms - http://www.spinics.net/lists/arm-kernel/msg364790.html - Modify clk-cpu.c to support Exynos3250 - Drop documentation patch on previous patchset[2] [2] http://www.spinics.net/lists/cpufreq/msg10265.html - Add only operating-points for Exynos3250 without armclk-divider-table Chanwoo Choi (3): clk: samsung: exynos3250: Add cpu clock configuration data and instaniate cpu clock ARM: dts: Add CPU OPP and regulator supply property for Exynos3250 ARM: exynos: Add exynos3250 compatible to use generic cpufreq driver arch/arm/boot/dts/exynos3250-monk.dts | 4 ++++ arch/arm/boot/dts/exynos3250-rinato.dts | 4 ++++ arch/arm/boot/dts/exynos3250.dtsi | 15 +++++++++++++++ arch/arm/mach-exynos/exynos.c | 1 + drivers/clk/samsung/clk-exynos3250.c | 32 ++++++++++++++++++++++++++++++-- include/dt-bindings/clock/exynos3250.h | 1 + 6 files changed, 55 insertions(+), 2 deletions(-) -- 1.8.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Chanwoo Choi <cw00.choi@samsung.com> |
|---|---|
| Date | 2015-07-02 02:50 +0200 |
| Subject | [PATCH v6 1/3] clk: samsung: exynos3250: Add cpu clock configuration data and instaniate cpu clock |
| Message-ID | <pHARr-3Yx-7@gated-at.bofh.it> |
| In reply to | #1175630 |
This patch add CPU clock configuration data and instantiate the CPU clock type
for Exynos3250 to support Samsung specific cpu-clock type.
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
drivers/clk/samsung/clk-exynos3250.c | 32 ++++++++++++++++++++++++++++++--
include/dt-bindings/clock/exynos3250.h | 1 +
2 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/samsung/clk-exynos3250.c b/drivers/clk/samsung/clk-exynos3250.c
index 538de66a759e..378ad5ad3492 100644
--- a/drivers/clk/samsung/clk-exynos3250.c
+++ b/drivers/clk/samsung/clk-exynos3250.c
@@ -19,6 +19,7 @@
#include <dt-bindings/clock/exynos3250.h>
#include "clk.h"
+#include "clk-cpu.h"
#include "clk-pll.h"
#define SRC_LEFTBUS 0x4200
@@ -319,8 +320,10 @@ static struct samsung_mux_clock mux_clks[] __initdata = {
MUX(CLK_MOUT_MPLL_USER_C, "mout_mpll_user_c", mout_mpll_user_p,
SRC_CPU, 24, 1),
MUX(CLK_MOUT_HPM, "mout_hpm", mout_hpm_p, SRC_CPU, 20, 1),
- MUX(CLK_MOUT_CORE, "mout_core", mout_core_p, SRC_CPU, 16, 1),
- MUX(CLK_MOUT_APLL, "mout_apll", mout_apll_p, SRC_CPU, 0, 1),
+ MUX_F(CLK_MOUT_CORE, "mout_core", mout_core_p, SRC_CPU, 16, 1,
+ CLK_SET_RATE_PARENT, 0),
+ MUX_F(CLK_MOUT_APLL, "mout_apll", mout_apll_p, SRC_CPU, 0, 1,
+ CLK_SET_RATE_PARENT, 0),
};
static struct samsung_div_clock div_clks[] __initdata = {
@@ -772,6 +775,26 @@ static struct samsung_cmu_info cmu_info __initdata = {
.nr_clk_regs = ARRAY_SIZE(exynos3250_cmu_clk_regs),
};
+#define E3250_CPU_DIV0(apll, pclk_dbg, atb, corem) \
+ (((apll) << 24) | ((pclk_dbg) << 20) | ((atb) << 16) | \
+ ((corem) << 4))
+#define E3250_CPU_DIV1(hpm, copy) \
+ (((hpm) << 4) | ((copy) << 0))
+
+static const struct exynos_cpuclk_cfg_data e3250_armclk_d[] __initconst = {
+ { 1000000, E3250_CPU_DIV0(1, 7, 4, 1), E3250_CPU_DIV1(7, 7), },
+ { 900000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 800000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 700000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 600000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 500000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 400000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 300000, E3250_CPU_DIV0(1, 5, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 200000, E3250_CPU_DIV0(1, 3, 3, 1), E3250_CPU_DIV1(7, 7), },
+ { 100000, E3250_CPU_DIV0(1, 1, 1, 1), E3250_CPU_DIV1(7, 7), },
+ { 0 },
+};
+
static void __init exynos3250_cmu_init(struct device_node *np)
{
struct samsung_clk_provider *ctx;
@@ -780,6 +803,11 @@ static void __init exynos3250_cmu_init(struct device_node *np)
if (!ctx)
return;
+ exynos_register_cpu_clock(ctx, CLK_ARM_CLK, "armclk",
+ mout_core_p[0], mout_core_p[1], 0x14200,
+ e3250_armclk_d, ARRAY_SIZE(e3250_armclk_d),
+ CLK_CPU_HAS_DIV1);
+
exynos3_core_down_clock(ctx->reg_base);
}
CLK_OF_DECLARE(exynos3250_cmu, "samsung,exynos3250-cmu", exynos3250_cmu_init);
diff --git a/include/dt-bindings/clock/exynos3250.h b/include/dt-bindings/clock/exynos3250.h
index aab088d30199..63d01c15d2b3 100644
--- a/include/dt-bindings/clock/exynos3250.h
+++ b/include/dt-bindings/clock/exynos3250.h
@@ -31,6 +31,7 @@
#define CLK_FOUT_VPLL 4
#define CLK_FOUT_UPLL 5
#define CLK_FOUT_MPLL 6
+#define CLK_ARM_CLK 7
/* Muxes */
#define CLK_MOUT_MPLL_USER_L 16
--
1.8.5.5
--
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| From | Chanwoo Choi <cw00.choi@samsung.com> |
|---|---|
| Date | 2015-07-02 02:50 +0200 |
| Subject | [PATCH v6 3/3] ARM: exynos: Add exynos3250 compatible to use generic cpufreq driver |
| Message-ID | <pHARs-3Yx-13@gated-at.bofh.it> |
| In reply to | #1175630 |
This patch add exynos3250 compatible string to exynos_cpufreq_matches
for supporting generic cpufreq driver on Exynos3250.
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
arch/arm/mach-exynos/exynos.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 4015ec369ae5..77ac0216ddc4 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -225,6 +225,7 @@ static void __init exynos_init_irq(void)
}
static const struct of_device_id exynos_cpufreq_matches[] = {
+ { .compatible = "samsung,exynos3250", .data = "cpufreq-dt" },
{ .compatible = "samsung,exynos4210", .data = "cpufreq-dt" },
{ .compatible = "samsung,exynos5250", .data = "cpufreq-dt" },
{ /* sentinel */ }
--
1.8.5.5
--
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| From | Chanwoo Choi <cw00.choi@samsung.com> |
|---|---|
| Date | 2015-07-02 02:50 +0200 |
| Subject | [PATCH v6 2/3] ARM: dts: Add CPU OPP and regulator supply property for Exynos3250 |
| Message-ID | <pHARs-3Yx-17@gated-at.bofh.it> |
| In reply to | #1175630 |
This patch add CPU operating points which include CPU frequency and regulator
voltage to use generic cpufreq drivers.
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
arch/arm/boot/dts/exynos3250-monk.dts | 4 ++++
arch/arm/boot/dts/exynos3250-rinato.dts | 4 ++++
arch/arm/boot/dts/exynos3250.dtsi | 15 +++++++++++++++
3 files changed, 23 insertions(+)
diff --git a/arch/arm/boot/dts/exynos3250-monk.dts b/arch/arm/boot/dts/exynos3250-monk.dts
index a5863acc5fff..7863265d4868 100644
--- a/arch/arm/boot/dts/exynos3250-monk.dts
+++ b/arch/arm/boot/dts/exynos3250-monk.dts
@@ -141,6 +141,10 @@
};
};
+&cpu0 {
+ cpu0-supply = <&buck2_reg>;
+};
+
&exynos_usbphy {
status = "okay";
};
diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 031853b75528..ddd7ac283045 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -132,6 +132,10 @@
};
};
+&cpu0 {
+ cpu0-supply = <&buck2_reg>;
+};
+
&exynos_usbphy {
status = "okay";
};
diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index d7201333e3bc..e0f3b2ed41a3 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -53,6 +53,21 @@
compatible = "arm,cortex-a7";
reg = <0>;
clock-frequency = <1000000000>;
+ clocks = <&cmu CLK_ARM_CLK>;
+ clock-names = "cpu";
+
+ operating-points = <
+ 1000000 1150000
+ 900000 1112500
+ 800000 1075000
+ 700000 1037500
+ 600000 1000000
+ 500000 962500
+ 400000 925000
+ 300000 887500
+ 200000 850000
+ 100000 850000
+ >;
};
cpu1: cpu@1 {
--
1.8.5.5
--
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