Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Olof Johansson:
 "Various driver updates for platforms:

   - A larger set of work on Tegra 2/3 around memory controller and
     regulator features, some fuse cleanups, etc..

   - MMP platform drivers, in particular for USB PHY, and other smaller
     additions.

   - Samsung Exynos 5422 driver for DMC (dynamic memory configuration),
     and ASV (adaptive voltage), allowing the platform to run at more
     optimal operating points.

   - Misc refactorings and support for RZ/G2N and R8A774B1 from Renesas

   - Clock/reset control driver for TI/OMAP

   - Meson-A1 reset controller support

   - Qualcomm sdm845 and sda845 SoC IDs for socinfo"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (150 commits)
  firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT
  soc: fsl: add RCPM driver
  dt-bindings: fsl: rcpm: Add 'little-endian' and update Chassis definition
  memory: tegra: Consolidate registers definition into common header
  memory: tegra: Ensure timing control debug features are disabled
  memory: tegra: Introduce Tegra30 EMC driver
  memory: tegra: Do not handle error from wait_for_completion_timeout()
  memory: tegra: Increase handshake timeout on Tegra20
  memory: tegra: Print a brief info message about EMC timings
  memory: tegra: Pre-configure debug register on Tegra20
  memory: tegra: Include io.h instead of iopoll.h
  memory: tegra: Adapt for Tegra20 clock driver changes
  memory: tegra: Don't set EMC rate to maximum on probe for Tegra20
  memory: tegra: Add gr2d and gr3d to DRM IOMMU group
  memory: tegra: Set DMA mask based on supported address bits
  soc: at91: Add Atmel SFR SN (Serial Number) support
  memory: atmel-ebi: switch to SPDX license identifiers
  memory: atmel-ebi: move NUM_CS definition inside EBI driver
  soc: mediatek: Refactor bus protection control
  soc: mediatek: Refactor sram control
  ...

1 files changed, 17 insertions, 35 deletions

diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 3d8d322511c5..ec8403557ed4 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -5,6 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/dma-mapping.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -18,39 +19,6 @@
 
 #include "mc.h"
 
-#define MC_INTSTATUS 0x000
-
-#define MC_INTMASK 0x004
-
-#define MC_ERR_STATUS 0x08
-#define  MC_ERR_STATUS_TYPE_SHIFT 28
-#define  MC_ERR_STATUS_TYPE_INVALID_SMMU_PAGE (6 << MC_ERR_STATUS_TYPE_SHIFT)
-#define  MC_ERR_STATUS_TYPE_MASK (0x7 << MC_ERR_STATUS_TYPE_SHIFT)
-#define  MC_ERR_STATUS_READABLE (1 << 27)
-#define  MC_ERR_STATUS_WRITABLE (1 << 26)
-#define  MC_ERR_STATUS_NONSECURE (1 << 25)
-#define  MC_ERR_STATUS_ADR_HI_SHIFT 20
-#define  MC_ERR_STATUS_ADR_HI_MASK 0x3
-#define  MC_ERR_STATUS_SECURITY (1 << 17)
-#define  MC_ERR_STATUS_RW (1 << 16)
-
-#define MC_ERR_ADR 0x0c
-
-#define MC_GART_ERROR_REQ		0x30
-#define MC_DECERR_EMEM_OTHERS_STATUS	0x58
-#define MC_SECURITY_VIOLATION_STATUS	0x74
-
-#define MC_EMEM_ARB_CFG 0x90
-#define  MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE(x)	(((x) & 0x1ff) << 0)
-#define  MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE_MASK	0x1ff
-#define MC_EMEM_ARB_MISC0 0xd8
-
-#define MC_EMEM_ADR_CFG 0x54
-#define MC_EMEM_ADR_CFG_EMEM_NUMDEV BIT(0)
-
-#define MC_TIMING_CONTROL		0xfc
-#define MC_TIMING_UPDATE		BIT(0)
-
 static const struct of_device_id tegra_mc_of_match[] = {
 #ifdef CONFIG_ARCH_TEGRA_2x_SOC
 	{ .compatible = "nvidia,tegra20-mc-gart", .data = &tegra20_mc_soc },
@@ -307,7 +275,7 @@ static int tegra_mc_setup_latency_allowance(struct tegra_mc *mc)
 	return 0;
 }
 
-void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate)
+int tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate)
 {
 	unsigned int i;
 	struct tegra_mc_timing *timing = NULL;
@@ -322,11 +290,13 @@ void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate)
 	if (!timing) {
 		dev_err(mc->dev, "no memory timing registered for rate %lu\n",
 			rate);
-		return;
+		return -EINVAL;
 	}
 
 	for (i = 0; i < mc->soc->num_emem_regs; ++i)
 		mc_writel(mc, timing->emem_data[i], mc->soc->emem_regs[i]);
+
+	return 0;
 }
 
 unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc)
@@ -626,6 +596,7 @@ static int tegra_mc_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct tegra_mc *mc;
 	void *isr;
+	u64 mask;
 	int err;
 
 	mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
@@ -637,6 +608,14 @@ static int tegra_mc_probe(struct platform_device *pdev)
 	mc->soc = of_device_get_match_data(&pdev->dev);
 	mc->dev = &pdev->dev;
 
+	mask = DMA_BIT_MASK(mc->soc->num_address_bits);
+
+	err = dma_coerce_mask_and_coherent(&pdev->dev, mask);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);
+		return err;
+	}
+
 	/* length of MC tick in nanoseconds */
 	mc->tick = 30;
 
@@ -658,6 +637,9 @@ static int tegra_mc_probe(struct platform_device *pdev)
 	} else
 #endif
 	{
+		/* ensure that debug features are disabled */
+		mc_writel(mc, 0x00000000, MC_TIMING_CONTROL_DBG);
+
 		err = tegra_mc_setup_latency_allowance(mc);
 		if (err < 0) {
 			dev_err(&pdev->dev,