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

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

   - Nvidia: Fuse support for Tegra194, continued memory controller
     pieces for Tegra30

   - NXP/FSL: Refactorings of QuickEngine drivers to support
     ARM/ARM64/PPC

   - NXP/FSL: i.MX8MP SoC driver pieces

   - TI Keystone: ring accelerator driver

   - Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.

   - Xilinx ZynqMP: feature checking interface for firmware. Mailbox
     communication for power management

   - Overall support patch set for cpuidle on more complex hierarchies
     (PSCI-based)

  and misc cleanups, refactorings of Marvell, TI, other platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits)
  drivers: soc: xilinx: Use mailbox IPI callback
  dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox
  drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists
  MAINTAINERS: Add brcmstb PCIe controller entry
  soc/tegra: fuse: Unmap registers once they are not needed anymore
  soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
  soc/tegra: fuse: Warn if straps are not ready
  soc/tegra: fuse: Cache values of straps and Chip ID registers
  memory: tegra30-emc: Correct error message for timed out auto calibration
  memory: tegra30-emc: Firm up hardware programming sequence
  memory: tegra30-emc: Firm up suspend/resume sequence
  soc/tegra: regulators: Do nothing if voltage is unchanged
  memory: tegra: Correct reset value of xusb_hostr
  soc/tegra: fuse: Add APB DMA dependency for Tegra20
  bus: tegra-aconnect: Remove PM_CLK dependency
  dt-bindings: mediatek: add MT6765 power dt-bindings
  soc: mediatek: cmdq: delete not used define
  memory: tegra: Add support for the Tegra194 memory controller
  memory: tegra: Only include support for enabled SoCs
  memory: tegra: Support DVFS on Tegra186 and later
  ...

1 files changed, 20 insertions, 14 deletions

diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index a2fd6ccd48f9..089d9340564b 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -21,18 +21,15 @@
 #define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT	\
 	(0x3 << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
 
-static void __iomem *apbmisc_base;
-static void __iomem *strapping_base;
 static bool long_ram_code;
+static u32 strapping;
+static u32 chipid;
 
 u32 tegra_read_chipid(void)
 {
-	if (!apbmisc_base) {
-		WARN(1, "Tegra Chip ID not yet available\n");
-		return 0;
-	}
+	WARN(!chipid, "Tegra ABP MISC not yet available\n");
 
-	return readl_relaxed(apbmisc_base + 4);
+	return chipid;
 }
 
 u8 tegra_get_chip_id(void)
@@ -42,10 +39,9 @@ u8 tegra_get_chip_id(void)
 
 u32 tegra_read_straps(void)
 {
-	if (strapping_base)
-		return readl_relaxed(strapping_base);
-	else
-		return 0;
+	WARN(!chipid, "Tegra ABP MISC not yet available\n");
+
+	return strapping;
 }
 
 u32 tegra_read_ram_code(void)
@@ -63,6 +59,7 @@ u32 tegra_read_ram_code(void)
 static const struct of_device_id apbmisc_match[] __initconst = {
 	{ .compatible = "nvidia,tegra20-apbmisc", },
 	{ .compatible = "nvidia,tegra186-misc", },
+	{ .compatible = "nvidia,tegra194-misc", },
 	{},
 };
 
@@ -103,6 +100,7 @@ void __init tegra_init_revision(void)
 
 void __init tegra_init_apbmisc(void)
 {
+	void __iomem *apbmisc_base, *strapping_base;
 	struct resource apbmisc, straps;
 	struct device_node *np;
 
@@ -123,7 +121,7 @@ void __init tegra_init_apbmisc(void)
 			apbmisc.flags = IORESOURCE_MEM;
 
 			/* strapping options */
-			if (tegra_get_chip_id() == TEGRA124) {
+			if (of_machine_is_compatible("nvidia,tegra124")) {
 				straps.start = 0x7000e864;
 				straps.end = 0x7000e867;
 			} else {
@@ -160,12 +158,20 @@ void __init tegra_init_apbmisc(void)
 	}
 
 	apbmisc_base = ioremap(apbmisc.start, resource_size(&apbmisc));
-	if (!apbmisc_base)
+	if (!apbmisc_base) {
 		pr_err("failed to map APBMISC registers\n");
+	} else {
+		chipid = readl_relaxed(apbmisc_base + 4);
+		iounmap(apbmisc_base);
+	}
 
 	strapping_base = ioremap(straps.start, resource_size(&straps));
-	if (!strapping_base)
+	if (!strapping_base) {
 		pr_err("failed to map strapping options registers\n");
+	} else {
+		strapping = readl_relaxed(strapping_base);
+		iounmap(strapping_base);
+	}
 
 	long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
 }