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| author | Jonathan Bakker <xc-racer2@live.ca> | 2020-05-01 16:50:16 -0700 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2020-05-04 17:13:04 +0200 |
| commit | 44a390fb43d37aedf928afc3e2b3ec0902f9c7fc (patch) | |
| tree | 297ee5a4d63cb809a06de191f0cd6f1637ca013d /arch/arm/boot/dts/s5pv210-galaxys.dts | |
| parent | 07297ea732ddb2b731127448f09f066ed6d5637f (diff) | |
| download | lwn-44a390fb43d37aedf928afc3e2b3ec0902f9c7fc.tar.gz lwn-44a390fb43d37aedf928afc3e2b3ec0902f9c7fc.zip | |
ARM: dts: s5pv210: Assign clocks to MMC devices on Aries boards
The SHDCI controller on Aries devices is a little bit peculiar about
the clocks and with a slightly off clock can run into errors such as:
mmc2: ADMA error: 0x02000000
mmc2: sdhci: ============ SDHCI REGISTER DUMP ===========
mmc2: sdhci: Sys addr: 0x347e4cc4 | Version: 0x00002401
mmc2: sdhci: Blk size: 0x00007004 | Blk cnt: 0x0000fffc
mmc2: sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
mmc2: sdhci: Present: 0x01fa0000 | Host ctl: 0x00000012
mmc2: sdhci: Power: 0x00000000 | Blk gap: 0x00000000
mmc2: sdhci: Wake-up: 0x00000000 | Clock: 0x0000010f
mmc2: sdhci: Timeout: 0x0000000a | Int stat: 0x00000003
mmc2: sdhci: Int enab: 0x03ff004b | Sig enab: 0x03ff004b
mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000001
mmc2: sdhci: Caps: 0x05e80080 | Caps_1: 0x00000000
mmc2: sdhci: Cmd: 0x0000163a | Max curr: 0x00000000
mmc2: sdhci: Resp[0]: 0x00000920 | Resp[1]: 0x00000000
mmc2: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
mmc2: sdhci: Host ctl2: 0x00000000
mmc2: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x349a3208
mmc2: sdhci: ============================================
mmc2: sdhci: 349a3200: DMA 0x347e4cc0, LEN 0x0004, Attr=0x23
Specifically assign the MMC sclks to be parented from MPLL with specific
rates that match the vendor kernel.
Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts/s5pv210-galaxys.dts')
| -rw-r--r-- | arch/arm/boot/dts/s5pv210-galaxys.dts | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/s5pv210-galaxys.dts b/arch/arm/boot/dts/s5pv210-galaxys.dts index a99fdda25262..5d10dd67eacc 100644 --- a/arch/arm/boot/dts/s5pv210-galaxys.dts +++ b/arch/arm/boot/dts/s5pv210-galaxys.dts @@ -355,4 +355,8 @@ pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4>; pinctrl-names = "default"; status = "okay"; + + assigned-clocks = <&clocks MOUT_MMC0>, <&clocks SCLK_MMC0>; + assigned-clock-rates = <0>, <52000000>; + assigned-clock-parents = <&clocks MOUT_MPLL>; }; |