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-rw-r--r--drivers/soc/fsl/qe/qe.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c
index d9c04f588f7f..31a094573a9d 100644
--- a/drivers/soc/fsl/qe/qe.c
+++ b/drivers/soc/fsl/qe/qe.c
@@ -161,11 +161,15 @@ EXPORT_SYMBOL(qe_issue_cmd);
161 */ 161 */
162static unsigned int brg_clk = 0; 162static unsigned int brg_clk = 0;
163 163
164#define CLK_GRAN (1000)
165#define CLK_GRAN_LIMIT (5)
166
164unsigned int qe_get_brg_clk(void) 167unsigned int qe_get_brg_clk(void)
165{ 168{
166 struct device_node *qe; 169 struct device_node *qe;
167 int size; 170 int size;
168 const u32 *prop; 171 const u32 *prop;
172 unsigned int mod;
169 173
170 if (brg_clk) 174 if (brg_clk)
171 return brg_clk; 175 return brg_clk;
@@ -183,6 +187,15 @@ unsigned int qe_get_brg_clk(void)
183 187
184 of_node_put(qe); 188 of_node_put(qe);
185 189
190 /* round this if near to a multiple of CLK_GRAN */
191 mod = brg_clk % CLK_GRAN;
192 if (mod) {
193 if (mod < CLK_GRAN_LIMIT)
194 brg_clk -= mod;
195 else if (mod > (CLK_GRAN - CLK_GRAN_LIMIT))
196 brg_clk += CLK_GRAN - mod;
197 }
198
186 return brg_clk; 199 return brg_clk;
187} 200}
188EXPORT_SYMBOL(qe_get_brg_clk); 201EXPORT_SYMBOL(qe_get_brg_clk);