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authorLinus Torvalds <torvalds@linux-foundation.org>2021-11-04 03:00:52 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-04 03:00:52 +0300
commitd461e96cd22b5aeb1df448536b92e8d8e88c4a05 (patch)
treeffd7a4ddc858c79a9a30952bedf14652ac10a2e4 /arch/arm/mach-qcom
parentae45d84fc36d01dcb1007f4298871eec37907904 (diff)
parent6a03568932b2711c91e1572f08867690b52a18df (diff)
downloadlinux-d461e96cd22b5aeb1df448536b92e8d8e88c4a05.tar.xz
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 ...
Diffstat (limited to 'arch/arm/mach-qcom')
-rw-r--r--arch/arm/mach-qcom/platsmp.c72
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,