diff options
Diffstat (limited to 'target/linux/gemini/patches-4.14/0004-pinctrl-Add-skew-delay-pin-config-and-bindings.patch')
| -rw-r--r-- | target/linux/gemini/patches-4.14/0004-pinctrl-Add-skew-delay-pin-config-and-bindings.patch | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/target/linux/gemini/patches-4.14/0004-pinctrl-Add-skew-delay-pin-config-and-bindings.patch b/target/linux/gemini/patches-4.14/0004-pinctrl-Add-skew-delay-pin-config-and-bindings.patch deleted file mode 100644 index ac39a3282d..0000000000 --- a/target/linux/gemini/patches-4.14/0004-pinctrl-Add-skew-delay-pin-config-and-bindings.patch +++ /dev/null @@ -1,73 +0,0 @@ -From eb3742c4250c6a79e7080bdb6286e5df50c7f26a Mon Sep 17 00:00:00 2001 -From: Linus Walleij <linus.walleij@linaro.org> -Date: Sat, 28 Oct 2017 15:37:17 +0200 -Subject: [PATCH 04/31] pinctrl: Add skew-delay pin config and bindings - -Some pin controllers (such as the Gemini) can control the -expected clock skew and output delay on certain pins with a -sub-nanosecond granularity. This is typically done by shunting -in a number of double inverters in front of or behind the pin. -Make it possible to configure this with a generic binding. - -Cc: devicetree@vger.kernel.org -Acked-by: Rob Herring <robh@kernel.org> -Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> -Signed-off-by: Linus Walleij <linus.walleij@linaro.org> ---- - Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt | 4 ++++ - drivers/pinctrl/pinconf-generic.c | 2 ++ - include/linux/pinctrl/pinconf-generic.h | 5 +++++ - 3 files changed, 11 insertions(+) - ---- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt -+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt -@@ -271,6 +271,10 @@ output-high - set the pin to output mod - sleep-hardware-state - indicate this is sleep related state which will be programmed - into the registers for the sleep state. - slew-rate - set the slew rate -+skew-delay - this affects the expected clock skew on input pins -+ and the delay before latching a value to an output -+ pin. Typically indicates how many double-inverters are -+ used to delay the signal. - - For example: - ---- a/drivers/pinctrl/pinconf-generic.c -+++ b/drivers/pinctrl/pinconf-generic.c -@@ -49,6 +49,7 @@ static const struct pin_config_item conf - PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector", true), - PCONFDUMP(PIN_CONFIG_SLEEP_HARDWARE_STATE, "sleep hardware state", NULL, false), - PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true), -+ PCONFDUMP(PIN_CONFIG_SKEW_DELAY, "skew delay", NULL, true), - }; - - static void pinconf_generic_dump_one(struct pinctrl_dev *pctldev, -@@ -181,6 +182,7 @@ static const struct pinconf_generic_para - { "power-source", PIN_CONFIG_POWER_SOURCE, 0 }, - { "sleep-hardware-state", PIN_CONFIG_SLEEP_HARDWARE_STATE, 0 }, - { "slew-rate", PIN_CONFIG_SLEW_RATE, 0 }, -+ { "skew-delay", PIN_CONFIG_SKEW_DELAY, 0 }, - }; - - /** ---- a/include/linux/pinctrl/pinconf-generic.h -+++ b/include/linux/pinctrl/pinconf-generic.h -@@ -90,6 +90,10 @@ - * @PIN_CONFIG_SLEW_RATE: if the pin can select slew rate, the argument to - * this parameter (on a custom format) tells the driver which alternative - * slew rate to use. -+ * @PIN_CONFIG_SKEW_DELAY: if the pin has programmable skew rate (on inputs) -+ * or latch delay (on outputs) this parameter (in a custom format) -+ * specifies the clock skew or latch delay. It typically controls how -+ * many double inverters are put in front of the line. - * @PIN_CONFIG_END: this is the last enumerator for pin configurations, if - * you need to pass in custom configurations to the pin controller, use - * PIN_CONFIG_END+1 as the base offset. -@@ -117,6 +121,7 @@ enum pin_config_param { - PIN_CONFIG_POWER_SOURCE, - PIN_CONFIG_SLEEP_HARDWARE_STATE, - PIN_CONFIG_SLEW_RATE, -+ PIN_CONFIG_SKEW_DELAY, - PIN_CONFIG_END = 0x7F, - PIN_CONFIG_MAX = 0xFF, - }; |