summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-05 12:14:43 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-05 12:14:43 -0800
commit18483190e7a2a6761b67c6824a31adf5b2b7be51 (patch)
tree9754b4c8eb72626827b48ae4f23c58df48d17499 /Documentation
parentd9862cfbe2099deb83f0e9c1932c91f2d9c50464 (diff)
parent8dd2eee2f444a7a570599bffc9da330157cca5b5 (diff)
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer and clockevent updates from Thomas Gleixner: "The time(r) core and clockevent updates are mostly boring this time: - A new driver for the Tegra210 timer - Small fixes and improvements alll over the place - Documentation updates and cleanups" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits) soc/tegra: default select TEGRA_TIMER for Tegra210 clocksource/drivers/tegra: Add Tegra210 timer support dt-bindings: timer: add Tegra210 timer clocksource/drivers/timer-cs5535: Rename the file for consistency clocksource/drivers/timer-pxa: Rename the file for consistency clocksource/drivers/tango-xtal: Rename the file for consistency dt-bindings: timer: gpt: update binding doc clocksource/drivers/exynos_mct: Remove unused header includes dt-bindings: timer: mediatek: update bindings for MT7629 SoC clocksource/drivers/exynos_mct: Fix error path in timer resources initialization clocksource/drivers/exynos_mct: Remove dead code clocksource/drivers/riscv: Add required checks during clock source init dt-bindings: timer: renesas: tmu: Document r8a774c0 bindings dt-bindings: timer: renesas, cmt: Document r8a774c0 CMT support clocksource/drivers/exynos_mct: Clear timer interrupt when shutdown clocksource/drivers/exynos_mct: Move one-shot check from tick clear to ISR clocksource/drivers/arch_timer: Workaround for Allwinner A64 timer instability clocksource/drivers/sun5i: Fail gracefully when clock rate is unavailable timers: Mark expected switch fall-throughs timekeeping/debug: No need to check return value of debugfs_create functions ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/arm64/silicon-errata.txt2
-rw-r--r--Documentation/devicetree/bindings/timer/fsl,imxgpt.txt39
-rw-r--r--Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt11
-rw-r--r--Documentation/devicetree/bindings/timer/nvidia,tegra210-timer.txt36
-rw-r--r--Documentation/devicetree/bindings/timer/renesas,cmt.txt2
-rw-r--r--Documentation/devicetree/bindings/timer/renesas,tmu.txt1
6 files changed, 82 insertions, 9 deletions
diff --git a/Documentation/arm64/silicon-errata.txt b/Documentation/arm64/silicon-errata.txt
index 1f09d043d086..ddb8ce5333ba 100644
--- a/Documentation/arm64/silicon-errata.txt
+++ b/Documentation/arm64/silicon-errata.txt
@@ -44,6 +44,8 @@ stable kernels.
| Implementor | Component | Erratum ID | Kconfig |
+----------------+-----------------+-----------------+-----------------------------+
+| Allwinner | A64/R18 | UNKNOWN1 | SUN50I_ERRATUM_UNKNOWN1 |
+| | | | |
| ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 |
| ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_827319 |
| ARM | Cortex-A53 | #824069 | ARM64_ERRATUM_824069 |
diff --git a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
index 9809b11f7180..5d8fd5b52598 100644
--- a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
+++ b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
@@ -2,17 +2,44 @@ Freescale i.MX General Purpose Timer (GPT)
Required properties:
-- compatible : should be "fsl,<soc>-gpt"
-- reg : Specifies base physical address and size of the registers.
-- interrupts : A list of 4 interrupts; one per timer channel.
-- clocks : The clocks provided by the SoC to drive the timer.
+- compatible : should be one of following:
+ for i.MX1:
+ - "fsl,imx1-gpt";
+ for i.MX21:
+ - "fsl,imx21-gpt";
+ for i.MX27:
+ - "fsl,imx27-gpt", "fsl,imx21-gpt";
+ for i.MX31:
+ - "fsl,imx31-gpt";
+ for i.MX25:
+ - "fsl,imx25-gpt", "fsl,imx31-gpt";
+ for i.MX50:
+ - "fsl,imx50-gpt", "fsl,imx31-gpt";
+ for i.MX51:
+ - "fsl,imx51-gpt", "fsl,imx31-gpt";
+ for i.MX53:
+ - "fsl,imx53-gpt", "fsl,imx31-gpt";
+ for i.MX6Q:
+ - "fsl,imx6q-gpt", "fsl,imx31-gpt";
+ for i.MX6DL:
+ - "fsl,imx6dl-gpt";
+ for i.MX6SL:
+ - "fsl,imx6sl-gpt", "fsl,imx6dl-gpt";
+ for i.MX6SX:
+ - "fsl,imx6sx-gpt", "fsl,imx6dl-gpt";
+- reg : specifies base physical address and size of the registers.
+- interrupts : should be the gpt interrupt.
+- clocks : the clocks provided by the SoC to drive the timer, must contain
+ an entry for each entry in clock-names.
+- clock-names : must include "ipg" entry first, then "per" entry.
Example:
gpt1: timer@10003000 {
- compatible = "fsl,imx27-gpt", "fsl,imx1-gpt";
+ compatible = "fsl,imx27-gpt", "fsl,imx21-gpt";
reg = <0x10003000 0x1000>;
interrupts = <26>;
- clocks = <&clks 46>, <&clks 61>;
+ clocks = <&clks IMX27_CLK_GPT1_IPG_GATE>,
+ <&clks IMX27_CLK_PER1_GATE>;
clock-names = "ipg", "per";
};
diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
index 18d4d0166c76..ff7c567a7972 100644
--- a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
+++ b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
@@ -1,7 +1,7 @@
-Mediatek Timers
+MediaTek Timers
---------------
-Mediatek SoCs have two different timers on different platforms,
+MediaTek SoCs have two different timers on different platforms,
- GPT (General Purpose Timer)
- SYST (System Timer)
@@ -9,6 +9,7 @@ The proper timer will be selected automatically by driver.
Required properties:
- compatible should contain:
+ For those SoCs that use GPT
* "mediatek,mt2701-timer" for MT2701 compatible timers (GPT)
* "mediatek,mt6580-timer" for MT6580 compatible timers (GPT)
* "mediatek,mt6589-timer" for MT6589 compatible timers (GPT)
@@ -17,7 +18,11 @@ Required properties:
* "mediatek,mt8135-timer" for MT8135 compatible timers (GPT)
* "mediatek,mt8173-timer" for MT8173 compatible timers (GPT)
* "mediatek,mt6577-timer" for MT6577 and all above compatible timers (GPT)
- * "mediatek,mt6765-timer" for MT6765 compatible timers (SYST)
+
+ For those SoCs that use SYST
+ * "mediatek,mt7629-timer" for MT7629 compatible timers (SYST)
+ * "mediatek,mt6765-timer" for MT6765 and all above compatible timers (SYST)
+
- reg: Should contain location and length for timer register.
- clocks: Should contain system clock.
diff --git a/Documentation/devicetree/bindings/timer/nvidia,tegra210-timer.txt b/Documentation/devicetree/bindings/timer/nvidia,tegra210-timer.txt
new file mode 100644
index 000000000000..032cda96fe0d
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/nvidia,tegra210-timer.txt
@@ -0,0 +1,36 @@
+NVIDIA Tegra210 timer
+
+The Tegra210 timer provides fourteen 29-bit timer counters and one 32-bit
+timestamp counter. The TMRs run at either a fixed 1 MHz clock rate derived
+from the oscillator clock (TMR0-TMR9) or directly at the oscillator clock
+(TMR10-TMR13). Each TMR can be programmed to generate one-shot, periodic,
+or watchdog interrupts.
+
+Required properties:
+- compatible : "nvidia,tegra210-timer".
+- reg : Specifies base physical address and size of the registers.
+- interrupts : A list of 14 interrupts; one per each timer channels 0 through
+ 13.
+- clocks : Must contain one entry, for the module clock.
+ See ../clocks/clock-bindings.txt for details.
+
+timer@60005000 {
+ compatible = "nvidia,tegra210-timer";
+ reg = <0x0 0x60005000 0x0 0x400>;
+ interrupts = <GIC_SPI 156 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 177 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 178 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 179 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&tegra_car TEGRA210_CLK_TIMER>;
+ clock-names = "timer";
+};
diff --git a/Documentation/devicetree/bindings/timer/renesas,cmt.txt b/Documentation/devicetree/bindings/timer/renesas,cmt.txt
index 862a80f0380a..c0594450e9ef 100644
--- a/Documentation/devicetree/bindings/timer/renesas,cmt.txt
+++ b/Documentation/devicetree/bindings/timer/renesas,cmt.txt
@@ -32,6 +32,8 @@ Required Properties:
- "renesas,r8a77470-cmt1" for the 48-bit CMT1 device included in r8a77470.
- "renesas,r8a774a1-cmt0" for the 32-bit CMT0 device included in r8a774a1.
- "renesas,r8a774a1-cmt1" for the 48-bit CMT1 device included in r8a774a1.
+ - "renesas,r8a774c0-cmt0" for the 32-bit CMT0 device included in r8a774c0.
+ - "renesas,r8a774c0-cmt1" for the 48-bit CMT1 device included in r8a774c0.
- "renesas,r8a7790-cmt0" for the 32-bit CMT0 device included in r8a7790.
- "renesas,r8a7790-cmt1" for the 48-bit CMT1 device included in r8a7790.
- "renesas,r8a7791-cmt0" for the 32-bit CMT0 device included in r8a7791.
diff --git a/Documentation/devicetree/bindings/timer/renesas,tmu.txt b/Documentation/devicetree/bindings/timer/renesas,tmu.txt
index 4ddff85837da..13ad07416bdd 100644
--- a/Documentation/devicetree/bindings/timer/renesas,tmu.txt
+++ b/Documentation/devicetree/bindings/timer/renesas,tmu.txt
@@ -10,6 +10,7 @@ Required Properties:
- compatible: must contain one or more of the following:
- "renesas,tmu-r8a7740" for the r8a7740 TMU
+ - "renesas,tmu-r8a774c0" for the r8a774C0 TMU
- "renesas,tmu-r8a7778" for the r8a7778 TMU
- "renesas,tmu-r8a7779" for the r8a7779 TMU
- "renesas,tmu-r8a77970" for the r8a77970 TMU