diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0262-overlays-sdio-Add-enhanced-1-bit-support.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0262-overlays-sdio-Add-enhanced-1-bit-support.patch | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0262-overlays-sdio-Add-enhanced-1-bit-support.patch b/target/linux/bcm27xx/patches-4.19/950-0262-overlays-sdio-Add-enhanced-1-bit-support.patch new file mode 100644 index 0000000000..42a9f112e9 --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0262-overlays-sdio-Add-enhanced-1-bit-support.patch @@ -0,0 +1,107 @@ +From 788109b357ddb30a95be72ce46dc22e2335131af Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Thu, 10 Jan 2019 15:27:56 +0000 +Subject: [PATCH] overlays: sdio: Add enhanced 1-bit support + +"dtoverlay=sdio,bus_width=1,gpios_22_25" is equivalent to the sdio-1bit +overlay, which is now deprecated. + +"dtoverlay=sdio,bus_width=1,gpios_34_37" enables 1-bit mode on GPIOs 34-37. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/README | 24 +++++++++++---------- + arch/arm/boot/dts/overlays/sdio-overlay.dts | 20 ++++++++++++++++- + 2 files changed, 32 insertions(+), 12 deletions(-) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -479,8 +479,7 @@ Params: <None> + + Name: bmp085_i2c-sensor + Info: This overlay is now deprecated - see i2c-sensor +-Load: dtoverlay=bmp085_i2c-sensor +-Params: <None> ++Load: <Deprecated> + + + Name: dht11 +@@ -1737,7 +1736,8 @@ Params: overclock_50 Clock (i + + Name: sdio + Info: Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock, +- and enables SDIO via GPIOs 22-27. ++ and enables SDIO via GPIOs 22-27. An example of use in 1-bit mode is ++ "dtoverlay=sdio,bus_width=1,gpios_22_25" + Load: dtoverlay=sdio,<param>=<val> + Params: sdio_overclock SDIO Clock (in MHz) to use when the MMC + framework requests 50MHz +@@ -1747,16 +1747,18 @@ Params: sdio_overclock SDIO Clo + + bus_width Set the SDIO host bus width (default 4 bits) + ++ gpios_22_25 Select GPIOs 22-25 for 1-bit mode. Must be used ++ with bus_width=1. This replaces the sdio-1bit ++ overlay, which is now deprecated. + +-Name: sdio-1bit +-Info: Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock, +- and enables 1-bit SDIO via GPIOs 22-25. +-Load: dtoverlay=sdio-1bit,<param>=<val> +-Params: sdio_overclock SDIO Clock (in MHz) to use when the MMC +- framework requests 50MHz ++ gpios_34_37 Select GPIOs 34-37 for 1-bit mode. Must be used ++ with bus_width=1. + +- poll_once Disable SDIO-device polling every second +- (default on: polling once at boot-time) ++ ++Name: sdio-1bit ++Info: This overlay is now deprecated. Use ++ "dtoverlay=sdio,bus_width=1,gpios_22_25" instead. ++Load: <Deprecated> + + + Name: sdtweak +--- a/arch/arm/boot/dts/overlays/sdio-overlay.dts ++++ b/arch/arm/boot/dts/overlays/sdio-overlay.dts +@@ -32,7 +32,7 @@ + pinctrl-names = "default"; + pinctrl-0 = <&sdio_ovl_pins>; + non-removable; +- bus-width = <1>; ++ bus-width = <4>; + }; + }; + }; +@@ -49,6 +49,22 @@ + }; + + fragment@3 { ++ target = <&sdio_ovl_pins>; ++ __dormant__ { ++ brcm,pins = <22 23 24 25>; ++ brcm,pull = <0 2 2 2>; ++ }; ++ }; ++ ++ fragment@4 { ++ target = <&sdio_ovl_pins>; ++ __dormant__ { ++ brcm,pins = <34 35 36 37>; ++ brcm,pull = <0 2 2 2>; ++ }; ++ }; ++ ++ fragment@6 { + target-path = "/aliases"; + __overlay__ { + mmc1 = "/soc/sdio@7e300000"; +@@ -59,5 +75,7 @@ + poll_once = <&sdio_ovl>,"non-removable?"; + bus_width = <&sdio_ovl>,"bus-width:0"; + sdio_overclock = <&sdio_ovl>,"brcm,overclock-50:0"; ++ gpios_22_25 = <0>,"=3"; ++ gpios_34_37 = <0>,"=4"; + }; + }; |