linux-kernel - [PATCH 1/2] reset: Add DesignWare IP support to simple reset

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Message-Id: <1928cabd16a83f1dfdbadc17f302339f00e93ef8.1557759340.git.gustavo.pimentel@synopsys.com>
Date:   Mon, 13 May 2019 17:41:27 +0200
From:   Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>
To:     p.zabel@...gutronix.de, robh+dt@...nel.org, mark.rutland@....com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:     Joao.Pinto@...opsys.com,
        Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>,
        Luis Oliveira <Luis.Oliveira@...opsys.com>
Subject: [PATCH 1/2] reset: Add DesignWare IP support to simple reset

The reset-simple driver can be now used on DesignWare IPs by
default by selecting the following compatible strings:
 - snps,dw-high-reset for active high resets inputs
 - snps,dw-low-reset for active low resets inputs

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@...opsys.com>
Signed-off-by: Luis Oliveira <luis.oliveira@...opsys.com>
---
 drivers/reset/Kconfig        | 2 +-
 drivers/reset/reset-simple.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 2c8c23d..2ee69f2 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -117,7 +117,7 @@ config RESET_QCOM_PDC
 
 config RESET_SIMPLE
 	bool "Simple Reset Controller Driver" if COMPILE_TEST
-	default ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARCH_ASPEED
+	default ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARCH_ASPEED || ARC
 	help
 	  This enables a simple reset controller driver for reset lines that
 	  that can be asserted and deasserted by toggling bits in a contiguous,
diff --git a/drivers/reset/reset-simple.c b/drivers/reset/reset-simple.c
index 77fbba3..79e73be 100644
--- a/drivers/reset/reset-simple.c
+++ b/drivers/reset/reset-simple.c
@@ -129,6 +129,9 @@ static const struct of_device_id reset_simple_dt_ids[] = {
 		.data = &reset_simple_active_low },
 	{ .compatible = "aspeed,ast2400-lpc-reset" },
 	{ .compatible = "aspeed,ast2500-lpc-reset" },
+	{ .compatible = "snps,dw-high-reset" },
+	{ .compatible = "snps,dw-low-reset",
+		.data = &reset_simple_active_low },
 	{ /* sentinel */ },
 };
 
-- 
2.7.4