diff options
Diffstat (limited to 'target/linux/at91/patches-5.10/233-ARM-dts-at91-sama7g5ek-to-not-touch-slew-rate-for-SD.patch')
| -rw-r--r-- | target/linux/at91/patches-5.10/233-ARM-dts-at91-sama7g5ek-to-not-touch-slew-rate-for-SD.patch | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/target/linux/at91/patches-5.10/233-ARM-dts-at91-sama7g5ek-to-not-touch-slew-rate-for-SD.patch b/target/linux/at91/patches-5.10/233-ARM-dts-at91-sama7g5ek-to-not-touch-slew-rate-for-SD.patch deleted file mode 100644 index 61ed933f02..0000000000 --- a/target/linux/at91/patches-5.10/233-ARM-dts-at91-sama7g5ek-to-not-touch-slew-rate-for-SD.patch +++ /dev/null @@ -1,73 +0,0 @@ -From 4c0b77276307d2cba8ae2595cbae4cc916c84c36 Mon Sep 17 00:00:00 2001 -From: Claudiu Beznea <claudiu.beznea@microchip.com> -Date: Wed, 15 Sep 2021 10:48:36 +0300 -Subject: [PATCH 233/247] ARM: dts: at91: sama7g5ek: to not touch slew-rate for - SDMMC pins - -With commit c709135e576b ("pinctrl: at91-pio4: add support for slew-rate") -and commit cbde6c823bfa ("pinctrl: at91-pio4: Fix slew rate disablement") -the slew-rate is enabled by default for each configured pin. The datasheet -specifies at chapter "Output Driver AC Characteristics" that HSIO -drivers (use in SDMMCx and QSPI0 peripherals), don't have a slewrate -setting but are rather calibrated against an external 1% resistor mounted -on the SDMMCx_CAL or QSPI0_CAL pins. Depending on the target signal -frequency and the external load, it is possible to adjust their target -output impedance. Thus set slew-rate = <0> for SDMMC (QSPI is not enabled -at the moment in device tree). - -Fixes: 7540629e2fc7 ("ARM: dts: at91: add sama7g5 SoC DT and sama7g5-ek") -Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> -Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> -Link: https://lore.kernel.org/r/20210915074836.6574-3-claudiu.beznea@microchip.com ---- - arch/arm/boot/dts/at91-sama7g5ek.dts | 6 ++++++ - 1 file changed, 6 insertions(+) - ---- a/arch/arm/boot/dts/at91-sama7g5ek.dts -+++ b/arch/arm/boot/dts/at91-sama7g5ek.dts -@@ -558,6 +558,7 @@ - <PIN_PA8__SDMMC0_DAT5>, - <PIN_PA9__SDMMC0_DAT6>, - <PIN_PA10__SDMMC0_DAT7>; -+ slew-rate = <0>; - bias-pull-up; - }; - -@@ -565,6 +566,7 @@ - pinmux = <PIN_PA0__SDMMC0_CK>, - <PIN_PA2__SDMMC0_RSTN>, - <PIN_PA11__SDMMC0_DS>; -+ slew-rate = <0>; - bias-pull-up; - }; - }; -@@ -576,6 +578,7 @@ - <PIN_PC0__SDMMC1_DAT1>, - <PIN_PC1__SDMMC1_DAT2>, - <PIN_PC2__SDMMC1_DAT3>; -+ slew-rate = <0>; - bias-pull-up; - }; - -@@ -584,6 +587,7 @@ - <PIN_PB28__SDMMC1_RSTN>, - <PIN_PC5__SDMMC1_1V8SEL>, - <PIN_PC4__SDMMC1_CD>; -+ slew-rate = <0>; - bias-pull-up; - }; - }; -@@ -595,11 +599,13 @@ - <PIN_PD6__SDMMC2_DAT1>, - <PIN_PD7__SDMMC2_DAT2>, - <PIN_PD8__SDMMC2_DAT3>; -+ slew-rate = <0>; - bias-pull-up; - }; - - ck { - pinmux = <PIN_PD4__SDMMC2_CK>; -+ slew-rate = <0>; - bias-pull-up; - }; - }; |