linux-kernel - [PATCH V5 1/2] i2c: tegra: remove master fifo support on tegra186

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Message-ID: <1550597332-21018-1-git-send-email-skomatineni@nvidia.com>
Date:   Tue, 19 Feb 2019 09:28:51 -0800
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <talho@...dia.com>, <skomatineni@...dia.com>
CC:     <wsa@...-dreams.de>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-i2c@...r.kernel.org>
Subject: [PATCH V5 1/2] i2c: tegra: remove master fifo support on tegra186

Tegra186 does not have master FIFO  control register and instead
uses FIFO control register like prior Tegra chipset.

This patch fixes this and prevents crashing during boot when
accessing FIFO control registers.

Acked-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
---
 drivers/i2c/busses/i2c-tegra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index a4cd79c9f7a7..e6851904acc1 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -1436,7 +1436,7 @@ static const struct tegra_i2c_hw_feature tegra186_i2c_hw = {
 	.has_config_load_reg = true,
 	.has_multi_master_mode = true,
 	.has_slcg_override_reg = true,
-	.has_mst_fifo = true,
+	.has_mst_fifo = false,
 	.quirks = &tegra_i2c_quirks,
 	.supports_bus_clear = true,
 	.has_apb_dma = false,
-- 
2.7.4