OpenWrt – Blame information for rev 1
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1 | office | 1 | From 3c015b0f686824f1b0815cc028665304ab0981d6 Mon Sep 17 00:00:00 2001 |
2 | From: Phil Elwell <phil@raspberrypi.org> |
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3 | Date: Tue, 24 Apr 2018 14:28:33 +0100 |
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4 | Subject: [PATCH 279/454] BCM270X_DT: Add sdio_overclock parameter |
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5 | |||
6 | The Arasan MMC interface is used on some RPis to drive the SDIO |
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7 | link to the WiFi controller. The downstream bcm2835-mmc driver, |
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8 | like the bcm2835-sdhost driver, can be over- (or under-) clocked. |
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9 | Add a common parameter - sdio_overclock - to all DTBs to control it. |
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10 | |||
11 | Signed-off-by: Phil Elwell <phil@raspberrypi.org> |
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12 | --- |
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13 | arch/arm/boot/dts/bcm2708-rpi.dtsi | 1 + |
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14 | arch/arm/boot/dts/overlays/README | 3 +++ |
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15 | 2 files changed, 4 insertions(+) |
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16 | |||
17 | --- a/arch/arm/boot/dts/bcm2708-rpi.dtsi |
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18 | +++ b/arch/arm/boot/dts/bcm2708-rpi.dtsi |
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19 | @@ -115,6 +115,7 @@ |
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20 | sd_force_pio = <&sdhost>,"brcm,force-pio?"; |
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21 | sd_pio_limit = <&sdhost>,"brcm,pio-limit:0"; |
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22 | sd_debug = <&sdhost>,"brcm,debug"; |
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23 | + sdio_overclock = <&mmc>,"brcm,overclock-50:0"; |
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24 | axiperf = <&axiperf>,"status"; |
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25 | }; |
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26 | }; |
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27 | --- a/arch/arm/boot/dts/overlays/README |
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28 | +++ b/arch/arm/boot/dts/overlays/README |
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29 | @@ -139,6 +139,9 @@ Params: |
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30 | |||
31 | sd_debug Enable debug output from SD driver (default off) |
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32 | |||
33 | + sdio_overclock Clock (in MHz) to use when the MMC framework |
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34 | + requests 50MHz for the SDIO/WiFi interface. |
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35 | + |
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36 | tx_lpi_timer Set the delay in microseconds between going idle |
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37 | and entering the low power state (default 600). |
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38 | Requires EEE to be enabled - see "eee". |