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Date: Mon, 24 Oct 2016 18:46:25 +0200 From: ahaslam@...libre.com To: gregkh@...uxfoundation.org, johan@...nel.org, robh+dt@...nel.org, nsekhar@...com, stern@...land.harvard.edu, khilman@...libre.com, sshtylyov@...mvista.com, david@...hnology.com, manjunath.goudar@...aro.org, broonie@...nel.org, abailon@...libre.com Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Axel Haslam <ahaslam@...libre.com> Subject: [PATCH/RFT v2 08/17] ARM: davinci: hawk: add full constraints for ohci plat boot From: Axel Haslam <ahaslam@...libre.com> The phy framework requests an optional "phy" regulator. If it does not find one, it returns -EPROBE_DEFER. In the case of non-DT based boot for the omap138-lcdk board, this would prevent the usb11 phy to probe correctly and ohci would not enumerate. By calling "regulator_has_full_constraints", An error would be returned instead of DEFER for the "optional" regulator, and the probe of the phy driver can continue normally without a regulator. Signed-off-by: Axel Haslam <ahaslam@...libre.com> --- arch/arm/mach-davinci/board-da830-evm.c | 3 +++ arch/arm/mach-davinci/board-omapl138-hawk.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index c62766e..b33fc6b 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -26,6 +26,7 @@ #include <linux/platform_data/mtd-davinci.h> #include <linux/platform_data/mtd-davinci-aemif.h> #include <linux/platform_data/spi-davinci.h> +#include <linux/regulator/machine.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -631,6 +632,8 @@ static __init void da830_evm_init(void) ret = da8xx_register_spi_bus(0, ARRAY_SIZE(da830evm_spi_info)); if (ret) pr_warn("%s: spi 0 registration failed: %d\n", __func__, ret); + + regulator_has_full_constraints(); } #ifdef CONFIG_SERIAL_8250_CONSOLE diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c index c5cb8d9..c3ab7ea 100644 --- a/arch/arm/mach-davinci/board-omapl138-hawk.c +++ b/arch/arm/mach-davinci/board-omapl138-hawk.c @@ -14,6 +14,7 @@ #include <linux/console.h> #include <linux/gpio.h> #include <linux/platform_data/gpio-davinci.h> +#include <linux/regulator/machine.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -328,6 +329,8 @@ static __init void omapl138_hawk_init(void) if (ret) pr_warn("%s: dsp/rproc registration failed: %d\n", __func__, ret); + + regulator_has_full_constraints(); } #ifdef CONFIG_SERIAL_8250_CONSOLE -- 1.9.1
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