linux-kernel - [PATCH 2/2] reset: simple: add BCM4908 MISC PCIe reset controller support

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Date:   Fri, 27 Nov 2020 12:14:42 +0100
From:   Rafał Miłecki <zajec5@...il.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Rafał Miłecki <rafal@...ecki.pl>
Subject: [PATCH 2/2] reset: simple: add BCM4908 MISC PCIe reset controller support

From: Rafał Miłecki <rafal@...ecki.pl>

It's a trivial reset controller. One register with bit per PCIe core.

Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
---
 drivers/reset/Kconfig        | 2 +-
 drivers/reset/reset-simple.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index b7e377a32c92..f393f7e17e33 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -173,7 +173,7 @@ config RESET_SCMI
 
 config RESET_SIMPLE
 	bool "Simple Reset Controller Driver" if COMPILE_TEST
-	default ARCH_AGILEX || ARCH_ASPEED || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARC
+	default ARCH_AGILEX || ARCH_ASPEED || ARCH_BCM4908 || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || 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 e066614818a3..4dda0daf2c6f 100644
--- a/drivers/reset/reset-simple.c
+++ b/drivers/reset/reset-simple.c
@@ -146,6 +146,8 @@ static const struct of_device_id reset_simple_dt_ids[] = {
 	{ .compatible = "aspeed,ast2500-lpc-reset" },
 	{ .compatible = "bitmain,bm1880-reset",
 		.data = &reset_simple_active_low },
+	{ .compatible = "brcm,bcm4908-misc-pcie-reset",
+		.data = &reset_simple_active_low },
 	{ .compatible = "snps,dw-high-reset" },
 	{ .compatible = "snps,dw-low-reset",
 		.data = &reset_simple_active_low },
-- 
2.26.2