Re: [PATCH V3 5/8] memory: tegra: Add EMC scaling support code for Tegra210
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2019-05-15 15:26:50
Also in:
linux-clk, linux-devicetree, linux-tegra
10.05.2019 11:47, Joseph Lo пишет:
This patch adds the required APIs and variables for the EMC scaling sequence code on Tegra210. Based on the work of Peter De Schrijver [off-list ref]. Signed-off-by: Joseph Lo <redacted> ---
+
+void do_clock_change(struct tegra_emc *emc, u32 clksrc)
+{
+ int err;
+
+ mc_readl(emc->mc, MC_EMEM_ADR_CFG);
+ emc_readl(emc, EMC_INTSTATUS);
+
+ tegra210_clk_emc_update_setting(clksrc);
+
+ err = wait_for_update(emc, EMC_INTSTATUS,
+ EMC_INTSTATUS_CLKCHANGE_COMPLETE, true, REG_EMC);
+ if (err) {
+ pr_err("%s: clock change completion error: %d", __func__, err);
+ WARN_ON(1);
+ }Ether WARN(err, ...) or dev_warn, or just dev_err. -- Dmitry _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel