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These settings are directly copied from StarFive's port of u-boot
for the JH7100:
/* config strap */
_SET_SYSCON_REG_SCFG_usb0_mode_strap(0x2);
_SET_SYSCON_REG_SCFG_usb7_PLL_EN(0x1);
_SET_SYSCON_REG_SCFG_usb7_U3_EQ_EN(0x1);
_SET_SYSCON_REG_SCFG_usb7_U3_SSRX_SEL(0x1);
_SET_SYSCON_REG_SCFG_usb7_U3_SSTX_SEL(0x1);
_SET_SYSCON_REG_SCFG_usb3_utmi_iddig(0x1);
Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
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Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
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Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
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The syscon regmap and offset to the USB mode register is only used at
probe time, so there is no need to store it in the device data. Just get
the regmap pointer in the cdns_mode_init() function where it is needed.
Also this function never uses the platform device, so just pass the
device pointer directly.
Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
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After commit 0edb555a65d1 ("platform: Make platform_driver::remove()
return void") .remove() is (again) the right callback to implement for
platform drivers.
Convert all platform drivers below drivers/usb to use .remove(), with
the eventual goal to drop struct platform_driver::remove_new(). As
.remove() and .remove_new() have the same prototypes, conversion is done
by just changing the structure member name in the driver initializer.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240924084329.53094-2-u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Use a common C comment "/*" instead of "/**" to prevent a warning
from scripts/kernel-doc.
cdns3-starfive.c:23: warning: expecting prototype for cdns3(). Prototype was for USB_STRAP_HOST() instead
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Minda Chen <minda.chen@starfivetech.com>
Cc: Peter Chen <peter.chen@kernel.org>
Cc: Pawel Laszczak <pawell@cadence.com>
Cc: Roger Quadros <rogerq@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <linux-usb@vger.kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20231206181317.27515-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() is renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20230707073653.3396988-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Adds Specific Glue layer to support USB peripherals on
StarFive JH7110 SoC.
There is a Cadence USB3 core for JH7110 SoCs, the cdns
core is the child of this USB wrapper module device.
Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20230518112750.57924-7-minda.chen@starfivetech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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