From 1662a0b06f2ad58aa4a632a88d0b3836c08bded2 Mon Sep 17 00:00:00 2001
From: cccc
Date: Tue, 25 Feb 2020 23:09:59 +0800
Subject: esp32/machine_sdcard: Add "freq" keyword arg to SDCard constructor.

To allow high speed access.
---
 docs/library/machine.SDCard.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'docs/library')

diff --git a/docs/library/machine.SDCard.rst b/docs/library/machine.SDCard.rst
index cf86b1fcb..b1cf42ec0 100644
--- a/docs/library/machine.SDCard.rst
+++ b/docs/library/machine.SDCard.rst
@@ -23,7 +23,7 @@ arguments that might need to be set in order to use either a non-standard slot
 or a non-standard pin assignment. The exact subset of arguments supported will
 vary from platform to platform.
 
-.. class:: SDCard(slot=1, width=1, cd=None, wp=None, sck=None, miso=None, mosi=None, cs=None)
+.. class:: SDCard(slot=1, width=1, cd=None, wp=None, sck=None, miso=None, mosi=None, cs=None, freq=20000000)
 
     This class provides access to SD or MMC storage cards using either
     a dedicated SD/MMC interface hardware or through an SPI channel.
@@ -50,6 +50,8 @@ vary from platform to platform.
      - *mosi* can be used to specify an SPI mosi pin.
 
      - *cs* can be used to specify an SPI chip select pin.
+     
+     - *freq* selects the SD/MMC interface frequency in Hz (only supported on the ESP32).
 
 Implementation-specific details
 -------------------------------
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