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Groups > linux.kernel > #1478963
| From | Lee Jones <lee.jones@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3/4] dt-bindings: mmc: sdhci-st: Mention the discretionary "icn" clock |
| Date | 2016-09-08 11:20 +0200 |
| Message-ID | <sf3F0-3UY-47@gated-at.bofh.it> (permalink) |
| References | <sf3F0-3UY-27@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
The interconnect (ICN) clock is required for functional working of
MMC on some ST platforms. When not supplied it can result in
broken MMC and the following output:
[ 13.916949] mmc0: Timeout waiting for hardware interrupt.
[ 13.922349] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 13.928175] sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 13.933999] sdhci: Blk size: 0x00007040 | Blk cnt: 0x00000001
[ 13.939825] sdhci: Argument: 0x00fffff0 | Trn mode: 0x00000013
[ 13.945650] sdhci: Present: 0x1fff0206 | Host ctl: 0x00000011
[ 13.951475] sdhci: Power: 0x0000000f | Blk gap: 0x00000080
[ 13.957300] sdhci: Wake-up: 0x00000000 | Clock: 0x00003f07
[ 13.963126] sdhci: Timeout: 0x00000004 | Int stat: 0x00000000
[ 13.968952] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 13.974777] sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
[ 13.980602] sdhci: Caps: 0x21ed3281 | Caps_1: 0x00000000
[ 13.986428] sdhci: Cmd: 0x0000063a | Max curr: 0x00000000
[ 13.992252] sdhci: Host ctl2: 0x00000000
[ 13.996166] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x7c048200
[ 14.001990] sdhci: ===========================================
[ 14.009802] mmc0: Got data interrupt 0x02000000 even though no data operation was in progress.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
Documentation/devicetree/bindings/mmc/sdhci-st.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-st.txt b/Documentation/devicetree/bindings/mmc/sdhci-st.txt
index 88faa91..3cd4c43 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-st.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-st.txt
@@ -10,7 +10,7 @@ Required properties:
subsystem (mmcss) inside the FlashSS (available in STiH407 SoC
family).
-- clock-names: Should be "mmc".
+- clock-names: Should be "mmc" and "icn". (NB: The latter is not compulsory)
See: Documentation/devicetree/bindings/resource-names.txt
- clocks: Phandle to the clock.
See: Documentation/devicetree/bindings/clock/clock-bindings.txt
--
2.9.3
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[PATCH 0/4] ARM: MMC: USB: Fix clocking Lee Jones <lee.jones@linaro.org> - 2016-09-08 11:20 +0200
[PATCH 2/4] ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI Lee Jones <lee.jones@linaro.org> - 2016-09-08 11:20 +0200
Re: [PATCH 2/4] ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI Patrice Chotard <patrice.chotard@st.com> - 2016-09-08 16:00 +0200
Re: [PATCH 2/4] ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI Patrice Chotard <patrice.chotard@st.com> - 2016-09-08 16:10 +0200
[PATCH 1/4] ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB) Lee Jones <lee.jones@linaro.org> - 2016-09-08 11:20 +0200
Re: [PATCH 1/4] ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB) Patrice Chotard <patrice.chotard@st.com> - 2016-09-08 16:00 +0200
Re: [PATCH 1/4] ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB) Patrice Chotard <patrice.chotard@st.com> - 2016-09-08 16:10 +0200
[PATCH 3/4] dt-bindings: mmc: sdhci-st: Mention the discretionary "icn" clock Lee Jones <lee.jones@linaro.org> - 2016-09-08 11:20 +0200
Re: [PATCH 3/4] dt-bindings: mmc: sdhci-st: Mention the discretionary "icn" clock Ulf Hansson <ulf.hansson@linaro.org> - 2016-09-09 14:00 +0200
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