Thread (63 messages) 63 messages, 9 authors, 2022-07-05

Re: [PATCH v5 15/15] reset: elbasr: Add AMD Pensando Elba SR Reset Controller

From: Rob Herring <robh@kernel.org>
Date: 2022-06-14 21:34:40
Also in: linux-devicetree, linux-mmc, lkml

On Mon, Jun 13, 2022 at 12:56:58PM -0700, Brad Larson wrote:
From: Brad Larson <blarson@amd.com>

This patch adds the reset controller functionality for the
AMD Pensando Elba System Resource Chip.

Signed-off-by: Brad Larson <blarson@amd.com>
---
 drivers/reset/Kconfig                         |  9 ++
 drivers/reset/Makefile                        |  1 +
 drivers/reset/reset-elbasr.c                  | 94 +++++++++++++++++++
 .../reset/amd,pensando-elba-reset.h           | 11 +++
This goes with the binding patch
quoted hunk ↗ jump to hunk
 4 files changed, 115 insertions(+)
 create mode 100644 drivers/reset/reset-elbasr.c
 create mode 100644 include/dt-bindings/reset/amd,pensando-elba-reset.h
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 93c8d07ee328..13f5a8ca0f03 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -66,6 +66,15 @@ config RESET_BRCMSTB_RESCAL
 	  This enables the RESCAL reset controller for SATA, PCIe0, or PCIe1 on
 	  BCM7216.
 
+config RESET_ELBASR
+	tristate "Pensando Elba System Resource reset controller"
+	depends on MFD_PENSANDO_ELBASR || COMPILE_TEST
+	help
+	  This option enables support for the external reset functions
+	  on the Pensando Elba System Resource Chip.  Reset control
+	  of peripherals is accessed over SPI to the system resource
+	  chip device registers using CS0.
+
 config RESET_HSDK
 	bool "Synopsys HSDK Reset Driver"
 	depends on HAS_IOMEM
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index a80a9c4008a7..c0fe12b9950e 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
 obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
 obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
+obj-$(CONFIG_RESET_ELBASR) += reset-elbasr.o
 obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o
 obj-$(CONFIG_RESET_IMX7) += reset-imx7.o
 obj-$(CONFIG_RESET_INTEL_GW) += reset-intel-gw.o
diff --git a/drivers/reset/reset-elbasr.c b/drivers/reset/reset-elbasr.c
new file mode 100644
index 000000000000..6e429cb11466
--- /dev/null
+++ b/drivers/reset/reset-elbasr.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
Kernel code is GPL-2.0-only generally.

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