Merge tag 'drivers-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are all the driver updates for SoC specific drivers. There are a
  couple of subsystems with individual maintainers picking up their
  patches here:

   - The reset controller subsystem add support for a few new SoC
     variants to existing drivers, along with other minor improvements

   - The OP-TEE subsystem gets a driver for the ARM FF-A transport

   - The memory controller subsystem has improvements for Tegra,
     Mediatek, Renesas, Freescale and Broadcom specific drivers.

   - The tegra cpuidle driver changes get merged through this tree this
     time. There are only minor changes, but they depend on other tegra
     driver updates here.

   - The ep93xx platform finally moves to using the drivers/clk/
     subsystem, moving the code out of arch/arm in the process. This
     depends on a small sound driver change that is included here as
     well.

   - There are some minor updates for Qualcomm and Tegra specific
     firmware drivers.

  The other driver updates are mainly for drivers/soc, which contains a
  mixture of vendor specific drivers that don't really fit elsewhere:

   - Mediatek drivers gain more support for MT8192, with new support for
     hw-mutex and mmsys routing, plus support for reset lines in the
     mmsys driver.

   - Qualcomm gains a new "sleep stats" driver, and support for the
     "Generic Packet Router" in the APR driver.

   - There is a new user interface for routing the UARTS on ASpeed BMCs,
     something that apparently nobody else has needed so far.

   - More drivers can now be built as loadable modules, in particular
     for Broadcom and Samsung platforms.

   - Lots of improvements to the TI sysc driver for better
     suspend/resume support"

  Finally, there are lots of minor cleanups and new device IDs for
  amlogic, renesas, tegra, qualcomm, mediateka, samsung, imx,
  layerscape, allwinner, broadcom, and omap"

* tag 'drivers-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (179 commits)
  optee: Fix spelling mistake "reclain" -> "reclaim"
  Revert "firmware: qcom: scm: Add support for MC boot address API"
  qcom: spm: allow compile-testing
  firmware: arm_ffa: Remove unused 'compat_version' variable
  soc: samsung: exynos-chipid: add exynosautov9 SoC support
  firmware: qcom: scm: Don't break compile test on non-ARM platforms
  soc: qcom: smp2p: Add of_node_put() before goto
  soc: qcom: apr: Add of_node_put() before return
  soc: qcom: qcom_stats: Fix client votes offset
  soc: qcom: rpmhpd: fix sm8350_mxc's peer domain
  dt-bindings: arm: cpus: Document qcom,msm8916-smp enable-method
  ARM: qcom: Add qcom,msm8916-smp enable-method identical to MSM8226
  firmware: qcom: scm: Add support for MC boot address API
  soc: qcom: spm: Add 8916 SPM register data
  dt-bindings: soc: qcom: spm: Document qcom,msm8916-saw2-v3.0-cpu
  soc: qcom: socinfo: Add PM8150C and SMB2351 models
  firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available()
  soc: aspeed: Add UART routing support
  soc: fsl: dpio: rename the enqueue descriptor variable
  soc: fsl: dpio: use an explicit NULL instead of 0
  ...

1 files changed, 72 insertions, 0 deletions

diff --git a/arch/arm/mach-qcom/platsmp.c b/arch/arm/mach-qcom/platsmp.c
index 630a038f4513..58a4228455ce 100644
--- a/arch/arm/mach-qcom/platsmp.c
+++ b/arch/arm/mach-qcom/platsmp.c
@@ -29,6 +29,7 @@
 #define COREPOR_RST		BIT(5)
 #define CORE_RST		BIT(4)
 #define L2DT_SLP		BIT(3)
+#define CORE_MEM_CLAMP		BIT(1)
 #define CLAMP			BIT(0)
 
 #define APC_PWR_GATE_CTL	0x14
@@ -75,6 +76,62 @@ static int scss_release_secondary(unsigned int cpu)
 	return 0;
 }
 
+static int cortex_a7_release_secondary(unsigned int cpu)
+{
+	int ret = 0;
+	void __iomem *reg;
+	struct device_node *cpu_node, *acc_node;
+	u32 reg_val;
+
+	cpu_node = of_get_cpu_node(cpu, NULL);
+	if (!cpu_node)
+		return -ENODEV;
+
+	acc_node = of_parse_phandle(cpu_node, "qcom,acc", 0);
+	if (!acc_node) {
+		ret = -ENODEV;
+		goto out_acc;
+	}
+
+	reg = of_iomap(acc_node, 0);
+	if (!reg) {
+		ret = -ENOMEM;
+		goto out_acc_map;
+	}
+
+	/* Put the CPU into reset. */
+	reg_val = CORE_RST | COREPOR_RST | CLAMP | CORE_MEM_CLAMP;
+	writel(reg_val, reg + APCS_CPU_PWR_CTL);
+
+	/* Turn on the BHS and set the BHS_CNT to 16 XO clock cycles */
+	writel(BHS_EN | (0x10 << BHS_CNT_SHIFT), reg + APC_PWR_GATE_CTL);
+	/* Wait for the BHS to settle */
+	udelay(2);
+
+	reg_val &= ~CORE_MEM_CLAMP;
+	writel(reg_val, reg + APCS_CPU_PWR_CTL);
+	reg_val |= L2DT_SLP;
+	writel(reg_val, reg + APCS_CPU_PWR_CTL);
+	udelay(2);
+
+	reg_val = (reg_val | BIT(17)) & ~CLAMP;
+	writel(reg_val, reg + APCS_CPU_PWR_CTL);
+	udelay(2);
+
+	/* Release CPU out of reset and bring it to life. */
+	reg_val &= ~(CORE_RST | COREPOR_RST);
+	writel(reg_val, reg + APCS_CPU_PWR_CTL);
+	reg_val |= CORE_PWRD_UP;
+	writel(reg_val, reg + APCS_CPU_PWR_CTL);
+
+	iounmap(reg);
+out_acc_map:
+	of_node_put(acc_node);
+out_acc:
+	of_node_put(cpu_node);
+	return ret;
+}
+
 static int kpssv1_release_secondary(unsigned int cpu)
 {
 	int ret = 0;
@@ -281,6 +338,11 @@ static int msm8660_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	return qcom_boot_secondary(cpu, scss_release_secondary);
 }
 
+static int cortex_a7_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+	return qcom_boot_secondary(cpu, cortex_a7_release_secondary);
+}
+
 static int kpssv1_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
 	return qcom_boot_secondary(cpu, kpssv1_release_secondary);
@@ -315,6 +377,16 @@ static const struct smp_operations smp_msm8660_ops __initconst = {
 };
 CPU_METHOD_OF_DECLARE(qcom_smp, "qcom,gcc-msm8660", &smp_msm8660_ops);
 
+static const struct smp_operations qcom_smp_cortex_a7_ops __initconst = {
+	.smp_prepare_cpus	= qcom_smp_prepare_cpus,
+	.smp_boot_secondary	= cortex_a7_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+	.cpu_die		= qcom_cpu_die,
+#endif
+};
+CPU_METHOD_OF_DECLARE(qcom_smp_msm8226, "qcom,msm8226-smp", &qcom_smp_cortex_a7_ops);
+CPU_METHOD_OF_DECLARE(qcom_smp_msm8916, "qcom,msm8916-smp", &qcom_smp_cortex_a7_ops);
+
 static const struct smp_operations qcom_smp_kpssv1_ops __initconst = {
 	.smp_prepare_cpus	= qcom_smp_prepare_cpus,
 	.smp_boot_secondary	= kpssv1_boot_secondary,