From bca1beb3f0f8c872e45f207495d54712c3429317 Mon Sep 17 00:00:00 2001
From: Wielebny666 <31576684+Wielebny666@users.noreply.github.com>
Date: Tue, 23 Jun 2020 16:02:50 +0200
Subject: [PATCH] spi_master: correctly set cs polarity

All devices must be added to the same spi line before use.
---
 components/driver/spi_master.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/components/driver/spi_master.c b/components/driver/spi_master.c
index 61376c9b38..755f01951b 100644
--- a/components/driver/spi_master.c
+++ b/components/driver/spi_master.c
@@ -494,12 +494,12 @@ Specify ``SPI_DEVICE_NO_DUMMY`` to ignore this checking. Then you can output dat
     if (dev_config->flags&SPI_DEVICE_CLK_AS_CS) {
         spihost[host]->hw->pin.master_ck_sel |= (1<<freecs);
     } else {
-        spihost[host]->hw->pin.master_ck_sel &= (1<<freecs);
+        spihost[host]->hw->pin.master_ck_sel &= ~(1<<freecs);
     }
     if (dev_config->flags&SPI_DEVICE_POSITIVE_CS) {
         spihost[host]->hw->pin.master_cs_pol |= (1<<freecs);
     } else {
-        spihost[host]->hw->pin.master_cs_pol &= (1<<freecs);
+        spihost[host]->hw->pin.master_cs_pol &= ~(1<<freecs);
     }
     spihost[host]->hw->ctrl2.mosi_delay_mode = 0;
     spihost[host]->hw->ctrl2.mosi_delay_num = 0;